20577050807 has 12 divisors (see below), whose sum is σ = 21226793616. Its totient is φ = 19943142240.

The previous prime is 20577050803. The next prime is 20577050821. The reversal of 20577050807 is 70805077502.

It is not a de Polignac number, because 20577050807 - 2² = 20577050803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20577050803) 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 11 ways as a sum of consecutive naturals, for example, 205523 + ... + 288779.

It is an arithmetic number, because the mean of its divisors is an integer number (1768899468).

Almost surely, 2^20577050807 is an apocalyptic number.

20577050807 is a deficient number, since it is larger than the sum of its proper divisors (649742809).

20577050807 is an frugal number, since it uses more digits than its factorization.

20577050807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83446 (or 83387 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 20577050807 in words is "twenty billion, five hundred seventy-seven million, fifty thousand, eight hundred seven".