156400896121 has 8 divisors (see below), whose sum is σ = 171311326920. Its totient is φ = 142124951808.

The previous prime is 156400896097. The next prime is 156400896131. The reversal of 156400896121 is 121698004651.

It can be written as a sum of positive squares in 4 ways, for example, as 46747196521 + 109653699600 = 216211^2 + 331140^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156400896121 - 2⁵ = 156400896089 is a prime.

It is a super-2 number, since 2×156400896121² (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 (156400896131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158621106 + ... + 158622091.

It is an arithmetic number, because the mean of its divisors is an integer number (21413915865).

Almost surely, 2^156400896121 is an apocalyptic number.

It is an amenable number.

156400896121 is a deficient number, since it is larger than the sum of its proper divisors (14910430799).

156400896121 is a wasteful number, since it uses less digits than its factorization.

156400896121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317243243.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 156400896121 in words is "one hundred fifty-six billion, four hundred million, eight hundred ninety-six thousand, one hundred twenty-one".