20215254606 has 64 divisors (see below), whose sum is σ = 41948928000. Its totient is φ = 6491032416.

The previous prime is 20215254601. The next prime is 20215254607. The reversal of 20215254606 is 60645251202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215254601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4717741 + ... + 4722023.

It is an arithmetic number, because the mean of its divisors is an integer number (655452000).

Almost surely, 2^20215254606 is an apocalyptic number.

20215254606 is an abundant number, since it is smaller than the sum of its proper divisors (21733673394).

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

20215254606 is a wasteful number, since it uses less digits than its factorization.

20215254606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 20215254606 in words is "twenty billion, two hundred fifteen million, two hundred fifty-four thousand, six hundred six".