20237790065 has 16 divisors (see below), whose sum is σ = 24343441920. Its totient is φ = 16151553600.

The previous prime is 20237790061. The next prime is 20237790107. The reversal of 20237790065 is 56009773202.

It is not a de Polignac number, because 20237790065 - 2² = 20237790061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20237790061) 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, 4674932 + ... + 4679258.

It is an arithmetic number, because the mean of its divisors is an integer number (1521465120).

Almost surely, 2^20237790065 is an apocalyptic number.

It is an amenable number.

20237790065 is a deficient number, since it is larger than the sum of its proper divisors (4105651855).

20237790065 is a wasteful number, since it uses less digits than its factorization.

20237790065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6352.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 20237790065 in words is "twenty billion, two hundred thirty-seven million, seven hundred ninety thousand, sixty-five".