156104136321 has 32 divisors (see below), whose sum is σ = 244398766080. Its totient is φ = 86786366976.

The previous prime is 156104136311. The next prime is 156104136347. The reversal of 156104136321 is 123631401651.

It is a happy number.

It is not a de Polignac number, because 156104136321 - 2²³ = 156095747713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156104136311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529261 + ... + 769626.

It is an arithmetic number, because the mean of its divisors is an integer number (7637461440).

Almost surely, 2^156104136321 is an apocalyptic number.

It is an amenable number.

156104136321 is a deficient number, since it is larger than the sum of its proper divisors (88294629759).

156104136321 is a wasteful number, since it uses less digits than its factorization.

156104136321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299053.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 156104136321 its reverse (123631401651), we get a palindrome (279735537972).

The spelling of 156104136321 in words is "one hundred fifty-six billion, one hundred four million, one hundred thirty-six thousand, three hundred twenty-one".