20501630604 has 96 divisors (see below), whose sum is σ = 65418339840. Its totient is φ = 5407020864.

The previous prime is 20501630603. The next prime is 20501630609. The reversal of 20501630604 is 40603610502.

20501630604 is a `hidden beast` number, since 2 + 0 + 50 + 1 + 6 + 3 + 0 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20501630603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1033194 + ... + 1052849.

It is an arithmetic number, because the mean of its divisors is an integer number (681441040).

Almost surely, 2^20501630604 is an apocalyptic number.

It is an amenable number.

20501630604 is an abundant number, since it is smaller than the sum of its proper divisors (44916709236).

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

20501630604 is a wasteful number, since it uses less digits than its factorization.

20501630604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086076 (or 2086068 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 20501630604 in words is "twenty billion, five hundred one million, six hundred thirty thousand, six hundred four".