78574247587 has 6 divisors (see below), whose sum is σ = 86366735084. Its totient is φ = 71431134060.

The previous prime is 78574247567. The next prime is 78574247599.

78574247587 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78574247587 - 2⁷ = 78574247459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78574247567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 324686853 + ... + 324687094.

Almost surely, 2^78574247587 is an apocalyptic number.

78574247587 is a deficient number, since it is larger than the sum of its proper divisors (7792487497).

78574247587 is a wasteful number, since it uses less digits than its factorization.

78574247587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649373969 (or 649373958 counting only the distinct ones).

The product of its digits is 122931200, while the sum is 64.

The spelling of 78574247587 in words is "seventy-eight billion, five hundred seventy-four million, two hundred forty-seven thousand, five hundred eighty-seven".