20607564418 has 16 divisors (see below), whose sum is σ = 35344730304. Its totient is φ = 8827444080.

The previous prime is 20607564389. The next prime is 20607564421. The reversal of 20607564418 is 81446570602.

It is a super-2 number, since 2×20607564418² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334713 + ... + 391468.

It is an arithmetic number, because the mean of its divisors is an integer number (2209045644).

Almost surely, 2^20607564418 is an apocalyptic number.

20607564418 is a deficient number, since it is larger than the sum of its proper divisors (14737165886).

20607564418 is a wasteful number, since it uses less digits than its factorization.

20607564418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728217.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 20607564418 in words is "twenty billion, six hundred seven million, five hundred sixty-four thousand, four hundred eighteen".