20626653552 has 80 divisors (see below), whose sum is σ = 55750122240. Its totient is φ = 6559128576.

The previous prime is 20626653533. The next prime is 20626653559. The reversal of 20626653552 is 25535662602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626653559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393768 + ... + 443064.

It is an arithmetic number, because the mean of its divisors is an integer number (696876528).

Almost surely, 2^20626653552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20626653552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27875061120).

20626653552 is an abundant number, since it is smaller than the sum of its proper divisors (35123468688).

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

20626653552 is a wasteful number, since it uses less digits than its factorization.

20626653552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49710 (or 49704 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 20626653552 in words is "twenty billion, six hundred twenty-six million, six hundred fifty-three thousand, five hundred fifty-two".