78708880787 has 16 divisors (see below), whose sum is σ = 83367897600. Its totient is φ = 74102726880.

The previous prime is 78708880777. The next prime is 78708880837.

78708880787 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78708880787 - 2⁸ = 78708880531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78708880717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2363462 + ... + 2396532.

It is an arithmetic number, because the mean of its divisors is an integer number (5210493600).

Almost surely, 2^78708880787 is an apocalyptic number.

78708880787 is a deficient number, since it is larger than the sum of its proper divisors (4659016813).

78708880787 is a wasteful number, since it uses less digits than its factorization.

78708880787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33866.

The product of its (nonzero) digits is 78675968, while the sum is 68.

The spelling of 78708880787 in words is "seventy-eight billion, seven hundred eight million, eight hundred eighty thousand, seven hundred eighty-seven".