20551769404 has 12 divisors (see below), whose sum is σ = 38081219904. Its totient is φ = 9671420864.

The previous prime is 20551769363. The next prime is 20551769431. The reversal of 20551769404 is 40496715502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151115884 + ... + 151116019.

It is an arithmetic number, because the mean of its divisors is an integer number (3173434992).

Almost surely, 2^20551769404 is an apocalyptic number.

It is an amenable number.

20551769404 is a deficient number, since it is larger than the sum of its proper divisors (17529450500).

20551769404 is a wasteful number, since it uses less digits than its factorization.

20551769404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302231924 (or 302231922 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 20551769404 in words is "twenty billion, five hundred fifty-one million, seven hundred sixty-nine thousand, four hundred four".