20364553044 has 72 divisors (see below), whose sum is σ = 57108673440. Its totient is φ = 6066475200.

The previous prime is 20364553037. The next prime is 20364553057. The reversal of 20364553044 is 44035546302.

20364553044 is a `hidden beast` number, since 2 + 0 + 3 + 64 + 553 + 0 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 412447 + ... + 459174.

It is an arithmetic number, because the mean of its divisors is an integer number (793176020).

Almost surely, 2^20364553044 is an apocalyptic number.

It is an amenable number.

20364553044 is an abundant number, since it is smaller than the sum of its proper divisors (36744120396).

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

20364553044 is a wasteful number, since it uses less digits than its factorization.

20364553044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871701 (or 871696 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 20364553044 in words is "twenty billion, three hundred sixty-four million, five hundred fifty-three thousand, forty-four".