2155301568 has 112 divisors (see below), whose sum is σ = 7241397760. Its totient is φ = 615796992.

The previous prime is 2155301563. The next prime is 2155301579. The reversal of 2155301568 is 8651035512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2155301563) 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, 76996 + ... + 101187.

Almost surely, 2^2155301568 is an apocalyptic number.

2155301568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2155301568 is an abundant number, since it is smaller than the sum of its proper divisors (5086096192).

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

2155301568 is a wasteful number, since it uses less digits than its factorization.

2155301568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178211 (or 178195 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 2155301568 is about 46425.2255568026. The cubic root of 2155301568 is about 1291.7228683493.

The spelling of 2155301568 in words is "two billion, one hundred fifty-five million, three hundred one thousand, five hundred sixty-eight".