156401431773 has 16 divisors (see below), whose sum is σ = 217619805696. Its totient is φ = 99726081840.

The previous prime is 156401431741. The next prime is 156401431847. The reversal of 156401431773 is 377134104651.

It is not a de Polignac number, because 156401431773 - 2⁵ = 156401431741 is a prime.

It is a super-2 number, since 2×156401431773² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156401431733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820938 + ... + 993348.

It is an arithmetic number, because the mean of its divisors is an integer number (13601237856).

Almost surely, 2^156401431773 is an apocalyptic number.

It is an amenable number.

156401431773 is a deficient number, since it is larger than the sum of its proper divisors (61218373923).

156401431773 is a wasteful number, since it uses less digits than its factorization.

156401431773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185584.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 156401431773 in words is "one hundred fifty-six billion, four hundred one million, four hundred thirty-one thousand, seven hundred seventy-three".