20637959426 has 8 divisors (see below), whose sum is σ = 35379359040. Its totient is φ = 8844839748.

The previous prime is 20637959423. The next prime is 20637959431. The reversal of 20637959426 is 62495973602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20637959423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737069966 + ... + 737069993.

It is an arithmetic number, because the mean of its divisors is an integer number (4422419880).

Almost surely, 2^20637959426 is an apocalyptic number.

20637959426 is a deficient number, since it is larger than the sum of its proper divisors (14741399614).

20637959426 is a wasteful number, since it uses less digits than its factorization.

20637959426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474139968.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 20637959426 in words is "twenty billion, six hundred thirty-seven million, nine hundred fifty-nine thousand, four hundred twenty-six".