380915687691 has 160 divisors (see below), whose sum is σ = 760871232000. Its totient is φ = 183923550720.

The previous prime is 380915687641. The next prime is 380915687693. The reversal of 380915687691 is 196786519083.

380915687691 is a `hidden beast` number, since 3 + 8 + 0 + 9 + 1 + 568 + 7 + 69 + 1 = 666.

It is not a de Polignac number, because 380915687691 - 2³¹ = 378768204043 is a prime.

It is a super-2 number, since 2×380915687691² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (380915687693) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6250335 + ... + 6310983.

It is an arithmetic number, because the mean of its divisors is an integer number (4755445200).

Almost surely, 2^380915687691 is an apocalyptic number.

380915687691 is a deficient number, since it is larger than the sum of its proper divisors (379955544309).

380915687691 is a wasteful number, since it uses less digits than its factorization.

380915687691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60751 (or 60742 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 380915687691 in words is "three hundred eighty billion, nine hundred fifteen million, six hundred eighty-seven thousand, six hundred ninety-one".