20627655572 has 24 divisors (see below), whose sum is σ = 37349129160. Its totient is φ = 9956589440.

The previous prime is 20627655569. The next prime is 20627655599. The reversal of 20627655572 is 27555672602.

It can be written as a sum of positive squares in 4 ways, for example, as 62948356 + 20564707216 = 7934^2 + 143404^2 .

It is a congruent number.

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, 1074038 + ... + 1093074.

It is an arithmetic number, because the mean of its divisors is an integer number (1556213715).

Almost surely, 2^20627655572 is an apocalyptic number.

It is an amenable number.

20627655572 is a deficient number, since it is larger than the sum of its proper divisors (16721473588).

20627655572 is a wasteful number, since it uses less digits than its factorization.

20627655572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28411 (or 28409 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 20627655572 in words is "twenty billion, six hundred twenty-seven million, six hundred fifty-five thousand, five hundred seventy-two".