20554107604 has 6 divisors (see below), whose sum is σ = 35969688314. Its totient is φ = 10277053800.

The previous prime is 20554107551. The next prime is 20554107617. The reversal of 20554107604 is 40670145502.

It can be written as a sum of positive squares in only one way, i.e., 12995544004 + 7558563600 = 113998^2 + 86940^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20554107604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2569263447 + ... + 2569263454.

Almost surely, 2^20554107604 is an apocalyptic number.

It is an amenable number.

20554107604 is a deficient number, since it is larger than the sum of its proper divisors (15415580710).

20554107604 is a wasteful number, since it uses less digits than its factorization.

20554107604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138526905 (or 5138526903 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 20554107604 in words is "twenty billion, five hundred fifty-four million, one hundred seven thousand, six hundred four".