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1997713752984 = 233227746024347
BaseRepresentation
bin11101000100100001000…
…001001100001110011000
321001222110002212110122200
4131010201001030032120
5230212304210043414
64125423110450200
7264221131503615
oct35044101141630
97058402773580
101997713752984
11700253373644
12283206363960
131164ca9c60a1
146c992da150c
1536e72426109
hex1d12104c398

1997713752984 has 24 divisors (see below), whose sum is σ = 5410474747860. Its totient is φ = 665904584304.

The previous prime is 1997713752959. The next prime is 1997713753067. The reversal of 1997713752984 is 4892573177991.

1997713752984 is a `hidden beast` number, since 1 + 9 + 9 + 7 + 7 + 13 + 7 + 529 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×19977137529842 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 27746024347 = 1997713752984 / (1 + 9 + 9 + 7 + 7 + 1 + 3 + 7 + 5 + 2 + 9 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13873012102 + ... + 13873012245.

Almost surely, 21997713752984 is an apocalyptic number.

It is an amenable number.

1997713752984 is an abundant number, since it is smaller than the sum of its proper divisors (3412760994876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1997713752984 is a wasteful number, since it uses less digits than its factorization.

1997713752984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27746024359 (or 27746024352 counting only the distinct ones).

The product of its digits is 240045120, while the sum is 72.

The spelling of 1997713752984 in words is "one trillion, nine hundred ninety-seven billion, seven hundred thirteen million, seven hundred fifty-two thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 27746024347 55492048694 83238073041 110984097388 166476146082 221968194776 249714219123 332952292164 499428438246 665904584328 998856876492 1997713752984