20670408704 has 96 divisors (see below), whose sum is σ = 45466686720. Its totient is φ = 9394401280.

The previous prime is 20670408701. The next prime is 20670408809. The reversal of 20670408704 is 40780407602.

It is not an unprimeable number, because it can be changed into a prime (20670408701) 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, 2722097 + ... + 2729679.

It is an arithmetic number, because the mean of its divisors is an integer number (473611320).

Almost surely, 2^20670408704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20670408704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22733343360).

20670408704 is an abundant number, since it is smaller than the sum of its proper divisors (24796278016).

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

20670408704 is an frugal number, since it uses more digits than its factorization.

20670408704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638 (or 7596 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 20670408704 in words is "twenty billion, six hundred seventy million, four hundred eight thousand, seven hundred four".