215360045021 has 32 divisors (see below), whose sum is σ = 243948481920. Its totient is φ = 188325446400.

The previous prime is 215360044957. The next prime is 215360045071. The reversal of 215360045021 is 120540063512.

It is a cyclic number.

It is not a de Polignac number, because 215360045021 - 2⁶ = 215360044957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215360045071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133514411 + ... + 133516023.

It is an arithmetic number, because the mean of its divisors is an integer number (7623390060).

Almost surely, 2^215360045021 is an apocalyptic number.

It is an amenable number.

215360045021 is a deficient number, since it is larger than the sum of its proper divisors (28588436899).

215360045021 is a wasteful number, since it uses less digits than its factorization.

215360045021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 215360045021 in words is "two hundred fifteen billion, three hundred sixty million, forty-five thousand, twenty-one".