20555353250404 has 48 divisors (see below), whose sum is σ = 41210966805120. Its totient is φ = 8787954954240.

The previous prime is 20555353250321. The next prime is 20555353250423. The reversal of 20555353250404 is 40405235355502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323079204 + ... + 323142820.

It is an arithmetic number, because the mean of its divisors is an integer number (858561808440).

Almost surely, 2^{20555353250404} is an apocalyptic number.

It is an amenable number.

20555353250404 is an abundant number, since it is smaller than the sum of its proper divisors (20655613554716).

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

20555353250404 is a wasteful number, since it uses less digits than its factorization.

20555353250404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91588 (or 91586 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 43.

The spelling of 20555353250404 in words is "twenty trillion, five hundred fifty-five billion, three hundred fifty-three million, two hundred fifty thousand, four hundred four".