78889692063 has 64 divisors (see below), whose sum is σ = 131469148160. Its totient is φ = 40969348992.

The previous prime is 78889692059. The next prime is 78889692073. The reversal of 78889692063 is 36029698887.

It is not a de Polignac number, because 78889692063 - 2² = 78889692059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78889691985 and 78889692003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78889692073) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7910106 + ... + 7920072.

It is an arithmetic number, because the mean of its divisors is an integer number (2054205440).

Almost surely, 2^78889692063 is an apocalyptic number.

78889692063 is a deficient number, since it is larger than the sum of its proper divisors (52579456097).

78889692063 is a wasteful number, since it uses less digits than its factorization.

78889692063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436.

The product of its (nonzero) digits is 62705664, while the sum is 66.

The spelling of 78889692063 in words is "seventy-eight billion, eight hundred eighty-nine million, six hundred ninety-two thousand, sixty-three".