77957694675 has 120 divisors (see below), whose sum is σ = 165698894592. Its totient is φ = 35494200000.

The previous prime is 77957694673. The next prime is 77957694691. The reversal of 77957694675 is 57649675977.

It is a happy number.

77957694675 is a `hidden beast` number, since 7 + 7 + 9 + 576 + 9 + 46 + 7 + 5 = 666.

It is not a de Polignac number, because 77957694675 - 2¹ = 77957694673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77957694671) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3546970 + ... + 3568880.

Almost surely, 2^77957694675 is an apocalyptic number.

77957694675 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77957694675 is an abundant number, since it is smaller than the sum of its proper divisors (87741199917).

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

77957694675 is a wasteful number, since it uses less digits than its factorization.

77957694675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22191 (or 22177 counting only the distinct ones).

The product of its digits is 700131600, while the sum is 72.

The spelling of 77957694675 in words is "seventy-seven billion, nine hundred fifty-seven million, six hundred ninety-four thousand, six hundred seventy-five".