20355007404 has 12 divisors (see below), whose sum is σ = 47495017304. Its totient is φ = 6785002464.

The previous prime is 20355007391. The next prime is 20355007441. The reversal of 20355007404 is 40470055302.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848125297 + ... + 848125320.

Almost surely, 2^20355007404 is an apocalyptic number.

It is an amenable number.

20355007404 is an abundant number, since it is smaller than the sum of its proper divisors (27140009900).

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

20355007404 is a wasteful number, since it uses less digits than its factorization.

20355007404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696250624 (or 1696250622 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The spelling of 20355007404 in words is "twenty billion, three hundred fifty-five million, seven thousand, four hundred four".