156910262161 has 3 divisors (see below), whose sum is σ = 156910658281. Its totient is φ = 156909866042.

The previous prime is 156910262143. The next prime is 156910262219. The reversal of 156910262161 is 161262019651.

It is a happy number.

The square root of 156910262161 is 396119.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-156910262161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156910262141) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 198060 + ... + 594178.

Almost surely, 2^156910262161 is an apocalyptic number.

156910262161 is the 396119-th square number.

156910262161 is the 198060-th centered octagonal number.

It is an amenable number.

156910262161 is a deficient number, since it is larger than the sum of its proper divisors (396120).

156910262161 is an frugal number, since it uses more digits than its factorization.

156910262161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792238 (or 396119 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 156910262161 in words is "one hundred fifty-six billion, nine hundred ten million, two hundred sixty-two thousand, one hundred sixty-one".