20408880402620 has 24 divisors (see below), whose sum is σ = 42907296611088. Its totient is φ = 8154285920000.

The previous prime is 20408880402553. The next prime is 20408880402629. The reversal of 20408880402620 is 2620408880402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20408880402629) 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, 579122006 + ... + 579157245.

It is an arithmetic number, because the mean of its divisors is an integer number (1787804025462).

Almost surely, 2^{20408880402620} is an apocalyptic number.

20408880402620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20408880402620 is an abundant number, since it is smaller than the sum of its proper divisors (22498416208468).

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

20408880402620 is a wasteful number, since it uses less digits than its factorization.

20408880402620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158280141 (or 1158280139 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The spelling of 20408880402620 in words is "twenty trillion, four hundred eight billion, eight hundred eighty million, four hundred two thousand, six hundred twenty".