20772504423 has 24 divisors (see below), whose sum is σ = 32829612816. Its totient is φ = 12552019200.

The previous prime is 20772504383. The next prime is 20772504427. The reversal of 20772504423 is 32440527702.

It is a happy number.

20772504423 is a `hidden beast` number, since 207 + 7 + 2 + 5 + 0 + 442 + 3 = 666.

It is not a de Polignac number, because 20772504423 - 2²⁰ = 20771455847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20772504427) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 277948 + ... + 344673.

It is an arithmetic number, because the mean of its divisors is an integer number (1367900534).

Almost surely, 2^20772504423 is an apocalyptic number.

20772504423 is a deficient number, since it is larger than the sum of its proper divisors (12057108393).

20772504423 is a wasteful number, since it uses less digits than its factorization.

20772504423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622975 (or 622972 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 36.

The spelling of 20772504423 in words is "twenty billion, seven hundred seventy-two million, five hundred four thousand, four hundred twenty-three".