2155621051153 has 8 divisors (see below), whose sum is σ = 2160969198696. Its totient is φ = 2150275814400.

The previous prime is 2155621051141. The next prime is 2155621051169. The reversal of 2155621051153 is 3511501265512.

It can be written as a sum of positive squares in 4 ways, for example, as 569288358144 + 1586332693009 = 754512^2 + 1259497^2 .

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 2155621051153 - 2²⁹ = 2155084180241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155621051123) 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, 759025 + ... + 2210737.

It is an arithmetic number, because the mean of its divisors is an integer number (270121149837).

Almost surely, 2^{2155621051153} is an apocalyptic number.

It is an amenable number.

2155621051153 is a deficient number, since it is larger than the sum of its proper divisors (5348147543).

2155621051153 is a wasteful number, since it uses less digits than its factorization.

2155621051153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455395.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 2155621051153 in words is "two trillion, one hundred fifty-five billion, six hundred twenty-one million, fifty-one thousand, one hundred fifty-three".