156712265161 has 9 divisors (see below), whose sum is σ = 158752755693. Its totient is φ = 154697687820.

The previous prime is 156712265141. The next prime is 156712265167. The reversal of 156712265161 is 161562217651.

It is a happy number.

The square root of 156712265161 is 395869.

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

It is not a de Polignac number, because 156712265161 - 2⁹ = 156712264649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156712265167) 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, 31271146 + ... + 31276156.

It is an arithmetic number, because the mean of its divisors is an integer number (17639195077).

Almost surely, 2^156712265161 is an apocalyptic number.

156712265161 is the 395869-th square number.

156712265161 is the 197935-th centered octagonal number.

It is an amenable number.

156712265161 is a deficient number, since it is larger than the sum of its proper divisors (2040490532).

156712265161 is an frugal number, since it uses more digits than its factorization.

156712265161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180 (or 5090 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The spelling of 156712265161 in words is "one hundred fifty-six billion, seven hundred twelve million, two hundred sixty-five thousand, one hundred sixty-one".