20606011552 has 36 divisors (see below), whose sum is σ = 47191449690. Its totient is φ = 8831147136.

The previous prime is 20606011541. The next prime is 20606011577. The reversal of 20606011552 is 25511060602.

It can be written as a sum of positive squares in only one way, i.e., 14516394256 + 6089617296 = 120484^2 + 78036^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20606011552.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6569227 + ... + 6572362.

Almost surely, 2^20606011552 is an apocalyptic number.

It is an amenable number.

20606011552 is an abundant number, since it is smaller than the sum of its proper divisors (26585438138).

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

20606011552 is a wasteful number, since it uses less digits than its factorization.

20606011552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13141613 (or 13141598 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 20606011552 in words is "twenty billion, six hundred six million, eleven thousand, five hundred fifty-two".