20477048757 has 48 divisors (see below), whose sum is σ = 30622164480. Its totient is φ = 12067480000.

The previous prime is 20477048737. The next prime is 20477048759. The reversal of 20477048757 is 75784077402.

It is not a de Polignac number, because 20477048757 - 2⁷ = 20477048629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477048759) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 19860832 + ... + 19861862.

It is an arithmetic number, because the mean of its divisors is an integer number (637961760).

Almost surely, 2^20477048757 is an apocalyptic number.

It is an amenable number.

20477048757 is a deficient number, since it is larger than the sum of its proper divisors (10145115723).

20477048757 is a wasteful number, since it uses less digits than its factorization.

20477048757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 51.

The spelling of 20477048757 in words is "twenty billion, four hundred seventy-seven million, forty-eight thousand, seven hundred fifty-seven".