20372018506 has 16 divisors (see below), whose sum is σ = 34925831424. Its totient is φ = 8730272304.

The previous prime is 20372018503. The next prime is 20372018507. The reversal of 20372018506 is 60581027302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20372018501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211791 + ... + 292573.

It is an arithmetic number, because the mean of its divisors is an integer number (2182864464).

Almost surely, 2^20372018506 is an apocalyptic number.

20372018506 is a deficient number, since it is larger than the sum of its proper divisors (14553812918).

20372018506 is a wasteful number, since it uses less digits than its factorization.

20372018506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98805.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20372018506 in words is "twenty billion, three hundred seventy-two million, eighteen thousand, five hundred six".