20627606688 has 96 divisors (see below), whose sum is σ = 58439174976. Its totient is φ = 6333186048.

The previous prime is 20627606687. The next prime is 20627606711. The reversal of 20627606688 is 88660672602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 20627606688.

It is not an unprimeable number, because it can be changed into a prime (20627606687) 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, 565120 + ... + 600512.

It is an arithmetic number, because the mean of its divisors is an integer number (608741406).

Almost surely, 2^20627606688 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 20627606688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29219587488).

20627606688 is an abundant number, since it is smaller than the sum of its proper divisors (37811568288).

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

20627606688 is a wasteful number, since it uses less digits than its factorization.

20627606688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35886 (or 35878 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 20627606688 in words is "twenty billion, six hundred twenty-seven million, six hundred six thousand, six hundred eighty-eight".