156739977216 has 135 divisors (see below), whose sum is σ = 453230162203. Its totient is φ = 52195983360.

The previous prime is 156739977211. The next prime is 156739977257. The reversal of 156739977216 is 612779937651.

The square root of 156739977216 is 395904.

It is a perfect power (a square), and thus also a powerful number.

156739977216 is a `hidden beast` number, since 156 + 7 + 399 + 77 + 21 + 6 = 666.

It is a super-2 number, since 2×156739977216² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156739977211) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 152026621 + ... + 152027651.

Almost surely, 2^156739977216 is an apocalyptic number.

156739977216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

156739977216 is the 395904-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156739977216

156739977216 is an abundant number, since it is smaller than the sum of its proper divisors (296490184987).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156739977216 is an frugal number, since it uses more digits than its factorization.

156739977216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096 (or 1036 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The spelling of 156739977216 in words is "one hundred fifty-six billion, seven hundred thirty-nine million, nine hundred seventy-seven thousand, two hundred sixteen".