156777136 has 20 divisors (see below), whose sum is σ = 307919032. Its totient is φ = 77314176.

The previous prime is 156777133. The next prime is 156777143. The reversal of 156777136 is 631777651.

It is a junction number, because it is equal to n+sod(n) for n = 156777092 and 156777101.

It is not an unprimeable number, because it can be changed into a prime (156777133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65946 + ... + 68281.

Almost surely, 2^156777136 is an apocalyptic number.

156777136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

156777136 is a deficient number, since it is larger than the sum of its proper divisors (151141896).

156777136 is a wasteful number, since it uses less digits than its factorization.

156777136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134308 (or 134302 counting only the distinct ones).

The product of its digits is 185220, while the sum is 43.

The square root of 156777136 is about 12521.0676861041. The cubic root of 156777136 is about 539.2136886873.

The spelling of 156777136 in words is "one hundred fifty-six million, seven hundred seventy-seven thousand, one hundred thirty-six".