20106564450 has 72 divisors (see below), whose sum is σ = 58005407952. Its totient is φ = 4595784480.

The previous prime is 20106564449. The next prime is 20106564481. The reversal of 20106564450 is 5446560102.

It is a super-3 number, since 3×20106564450³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1360444 + ... + 1375143.

It is an arithmetic number, because the mean of its divisors is an integer number (805630666).

Almost surely, 2^20106564450 is an apocalyptic number.

20106564450 is an abundant number, since it is smaller than the sum of its proper divisors (37898843502).

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

20106564450 is a wasteful number, since it uses less digits than its factorization.

20106564450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735616 (or 2735604 counting only the distinct ones).

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

The spelling of 20106564450 in words is "twenty billion, one hundred six million, five hundred sixty-four thousand, four hundred fifty".