155656155616001 has 4 divisors (see below), whose sum is σ = 155703054129600. Its totient is φ = 155609257102404.

The previous prime is 155656155615997. The next prime is 155656155616019. The reversal of 155656155616001 is 100616551656551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155656155616001 - 2² = 155656155615997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155656155616501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23449251821 + ... + 23449258458.

It is an arithmetic number, because the mean of its divisors is an integer number (38925763532400).

Almost surely, 2^{155656155616001} is an apocalyptic number.

It is an amenable number.

155656155616001 is a deficient number, since it is larger than the sum of its proper divisors (46898513599).

155656155616001 is an equidigital number, since it uses as much as digits as its factorization.

155656155616001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46898513598.

The product of its (nonzero) digits is 4050000, while the sum is 53.

The spelling of 155656155616001 in words is "one hundred fifty-five trillion, six hundred fifty-six billion, one hundred fifty-five million, six hundred sixteen thousand, one".