156942321271 has 18 divisors (see below), whose sum is σ = 160041678408. Its totient is φ = 153896090400.

The previous prime is 156942321253. The next prime is 156942321281. The reversal of 156942321271 is 172123249651.

It is not a de Polignac number, because 156942321271 - 2⁷ = 156942321143 is a prime.

It is a Duffinian number.

Its product of digits (181440) is a multiple of the sum of its prime divisors (567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156942321251) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 501413011 + ... + 501413323.

It is an arithmetic number, because the mean of its divisors is an integer number (8891204356).

Almost surely, 2^156942321271 is an apocalyptic number.

156942321271 is a deficient number, since it is larger than the sum of its proper divisors (3099357137).

156942321271 is an frugal number, since it uses more digits than its factorization.

156942321271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 567 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The spelling of 156942321271 in words is "one hundred fifty-six billion, nine hundred forty-two million, three hundred twenty-one thousand, two hundred seventy-one".