2155533411156 has 12 divisors (see below), whose sum is σ = 5029577959392. Its totient is φ = 718511137048.

The previous prime is 2155533411137. The next prime is 2155533411167. The reversal of 2155533411156 is 6511143355512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89813892120 + ... + 89813892143.

It is an arithmetic number, because the mean of its divisors is an integer number (419131496616).

Almost surely, 2^{2155533411156} is an apocalyptic number.

It is an amenable number.

2155533411156 is an abundant number, since it is smaller than the sum of its proper divisors (2874044548236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155533411156 is a wasteful number, since it uses less digits than its factorization.

2155533411156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179627784270 (or 179627784268 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

Adding to 2155533411156 its reverse (6511143355512), we get a palindrome (8666676766668).

The spelling of 2155533411156 in words is "two trillion, one hundred fifty-five billion, five hundred thirty-three million, four hundred eleven thousand, one hundred fifty-six".