20616354104 has 64 divisors (see below), whose sum is σ = 41861836800. Its totient is φ = 9481434624.

The previous prime is 20616354097. The next prime is 20616354107. The reversal of 20616354104 is 40145361602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616354107) 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, 5258657 + ... + 5262575.

It is an arithmetic number, because the mean of its divisors is an integer number (654091200).

Almost surely, 2^20616354104 is an apocalyptic number.

It is an amenable number.

20616354104 is an abundant number, since it is smaller than the sum of its proper divisors (21245482696).

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

20616354104 is a wasteful number, since it uses less digits than its factorization.

20616354104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 20616354104 in words is "twenty billion, six hundred sixteen million, three hundred fifty-four thousand, one hundred four".