20440622616 has 32 divisors (see below), whose sum is σ = 51184416240. Its totient is φ = 6802492928.

The previous prime is 20440622599. The next prime is 20440622627. The reversal of 20440622616 is 61622604402.

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, 675381 + ... + 704996.

Almost surely, 2^20440622616 is an apocalyptic number.

It is an amenable number.

20440622616 is an abundant number, since it is smaller than the sum of its proper divisors (30743793624).

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

20440622616 is a wasteful number, since it uses less digits than its factorization.

20440622616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381003 (or 1380999 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 20440622616 in words is "twenty billion, four hundred forty million, six hundred twenty-two thousand, six hundred sixteen".