20552521146 has 16 divisors (see below), whose sum is σ = 41366859744. Its totient is φ = 6807204144.

The previous prime is 20552521139. The next prime is 20552521169. The reversal of 20552521146 is 64112525502.

It is a super-2 number, since 2×20552521146² (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, 10908040 + ... + 10909923.

It is an arithmetic number, because the mean of its divisors is an integer number (2585428734).

Almost surely, 2^20552521146 is an apocalyptic number.

20552521146 is an abundant number, since it is smaller than the sum of its proper divisors (20814338598).

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

20552521146 is a wasteful number, since it uses less digits than its factorization.

20552521146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21818125.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 20552521146 in words is "twenty billion, five hundred fifty-two million, five hundred twenty-one thousand, one hundred forty-six".