78163136 has 14 divisors (see below), whose sum is σ = 155105100. Its totient is φ = 39081536.

The previous prime is 78163123. The next prime is 78163213. The reversal of 78163136 is 63136187.

It is a super-2 number, since 2×78163136² = 12218951658708992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78163096 and 78163105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610586 + ... + 610713.

Almost surely, 2^78163136 is an apocalyptic number.

It is an amenable number.

78163136 is a deficient number, since it is larger than the sum of its proper divisors (76941964).

78163136 is a wasteful number, since it uses less digits than its factorization.

78163136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221311 (or 1221301 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 78163136 is about 8840.9917995664. The cubic root of 78163136 is about 427.5635344396.

The spelling of 78163136 in words is "seventy-eight million, one hundred sixty-three thousand, one hundred thirty-six".