20577050806 has 16 divisors (see below), whose sum is σ = 34989318000. Its totient is φ = 8997252768.

The previous prime is 20577050803. The next prime is 20577050821. The reversal of 20577050806 is 60805077502.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20826481 + ... + 20827468.

It is an arithmetic number, because the mean of its divisors is an integer number (2186832375).

Almost surely, 2^20577050806 is an apocalyptic number.

20577050806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20577050806 is a deficient number, since it is larger than the sum of its proper divisors (14412267194).

20577050806 is a wasteful number, since it uses less digits than its factorization.

20577050806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41653983.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 20577050806 in words is "twenty billion, five hundred seventy-seven million, fifty thousand, eight hundred six".