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1997235451367 = 13349440210591
BaseRepresentation
bin11101000100000100100…
…000100111010111100111
321001221012202212020011222
4131010010200213113213
5230210314233420432
64125303423050555
7264203233141352
oct35040440472747
97057182766158
101997235451367
11700028387552
122830b2140a5b
1311645289a490
146c949657299
1536e45447112
hex1d1048275e7

1997235451367 has 8 divisors (see below), whose sum is σ = 2157031900800. Its totient is φ = 1838319423840.

The previous prime is 1997235451363. The next prime is 1997235451373. The reversal of 1997235451367 is 7631545327991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1997235451367 - 22 = 1997235451363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997235451363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220100759 + ... + 220109832.

It is an arithmetic number, because the mean of its divisors is an integer number (269628987600).

Almost surely, 21997235451367 is an apocalyptic number.

1997235451367 is a deficient number, since it is larger than the sum of its proper divisors (159796449433).

1997235451367 is a wasteful number, since it uses less digits than its factorization.

1997235451367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440210953.

The product of its digits is 42865200, while the sum is 62.

The spelling of 1997235451367 in words is "one trillion, nine hundred ninety-seven billion, two hundred thirty-five million, four hundred fifty-one thousand, three hundred sixty-seven".

Divisors: 1 13 349 4537 440210591 5722737683 153633496259 1997235451367