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387668720983 = 3257812314653
BaseRepresentation
bin1011010010000101101…
…10110011110101010111
31101001122022002111021011
411221002312303311113
522322421143032413
6454031554033051
740002535521145
oct5510266636527
91331568074234
10387668720983
1113a455982a15
1263171578787
132a73197683b
1414a9858c595
15a13e03b33d
hex5a42db3d57

387668720983 has 8 divisors (see below), whose sum is σ = 387861954768. Its totient is φ = 387475539264.

The previous prime is 387668720981. The next prime is 387668721031. The reversal of 387668720983 is 389027866783.

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 387668720983 - 21 = 387668720981 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 (387668720981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26449285 + ... + 26463937.

It is an arithmetic number, because the mean of its divisors is an integer number (48482744346).

Almost surely, 2387668720983 is an apocalyptic number.

387668720983 is a deficient number, since it is larger than the sum of its proper divisors (193233785).

387668720983 is a wasteful number, since it uses less digits than its factorization.

387668720983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26033.

The product of its (nonzero) digits is 146313216, while the sum is 67.

The spelling of 387668720983 in words is "three hundred eighty-seven billion, six hundred sixty-eight million, seven hundred twenty thousand, nine hundred eighty-three".

Divisors: 1 3257 8123 14653 26456611 47724821 119026319 387668720983