78566112844 has 6 divisors (see below), whose sum is σ = 137490697484. Its totient is φ = 39283056420.

The previous prime is 78566112817. The next prime is 78566112851. The reversal of 78566112844 is 44821166587.

It is a super-2 number, since 2×78566112844² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78566112791 and 78566112800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9820764102 + ... + 9820764109.

Almost surely, 2^78566112844 is an apocalyptic number.

It is an amenable number.

78566112844 is a deficient number, since it is larger than the sum of its proper divisors (58924584640).

78566112844 is a wasteful number, since it uses less digits than its factorization.

78566112844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19641528215 (or 19641528213 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The spelling of 78566112844 in words is "seventy-eight billion, five hundred sixty-six million, one hundred twelve thousand, eight hundred forty-four".