155655560111001 has 16 divisors (see below), whose sum is σ = 218559468441600. Its totient is φ = 98265788815248.

The previous prime is 155655560110949. The next prime is 155655560111081. The reversal of 155655560111001 is 100111065556551.

It is not a de Polignac number, because 155655560111001 - 2¹⁵ = 155655560078233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155655560111081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596896161 + ... + 597156878.

It is an arithmetic number, because the mean of its divisors is an integer number (13659966777600).

Almost surely, 2^{155655560111001} is an apocalyptic number.

It is an amenable number.

155655560111001 is a deficient number, since it is larger than the sum of its proper divisors (62903908330599).

155655560111001 is a wasteful number, since it uses less digits than its factorization.

155655560111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194055348.

The product of its (nonzero) digits is 112500, while the sum is 42.

The spelling of 155655560111001 in words is "one hundred fifty-five trillion, six hundred fifty-five billion, five hundred sixty million, one hundred eleven thousand, one".