78875257887 has 12 divisors (see below), whose sum is σ = 114133299384. Its totient is φ = 52490103120.

The previous prime is 78875257883. The next prime is 78875257907.

78875257887 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78875257887 - 2² = 78875257883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78875257883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7778164 + ... + 7788297.

It is an arithmetic number, because the mean of its divisors is an integer number (9511108282).

Almost surely, 2^78875257887 is an apocalyptic number.

78875257887 is a deficient number, since it is larger than the sum of its proper divisors (35258041497).

78875257887 is a wasteful number, since it uses less digits than its factorization.

78875257887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15567030 (or 15567027 counting only the distinct ones).

The product of its digits is 491724800, while the sum is 72.

The spelling of 78875257887 in words is "seventy-eight billion, eight hundred seventy-five million, two hundred fifty-seven thousand, eight hundred eighty-seven".