20615016104 has 64 divisors (see below), whose sum is σ = 41591491200. Its totient is φ = 9556408576.

The previous prime is 20615016101. The next prime is 20615016133. The reversal of 20615016104 is 40161051602.

It is not an unprimeable number, because it can be changed into a prime (20615016101) 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, 796682 + ... + 822150.

It is an arithmetic number, because the mean of its divisors is an integer number (649867050).

Almost surely, 2^20615016104 is an apocalyptic number.

It is an amenable number.

20615016104 is an abundant number, since it is smaller than the sum of its proper divisors (20976475096).

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

20615016104 is a wasteful number, since it uses less digits than its factorization.

20615016104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25634 (or 25630 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 20615016104 its reverse (40161051602), we get a palindrome (60776067706).

The spelling of 20615016104 in words is "twenty billion, six hundred fifteen million, sixteen thousand, one hundred four".