20575944177 has 16 divisors (see below), whose sum is σ = 28488723648. Its totient is φ = 13199397120.

The previous prime is 20575944161. The next prime is 20575944217. The reversal of 20575944177 is 77144957502.

It is not a de Polignac number, because 20575944177 - 2⁴ = 20575944161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20575944107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136803 + ... + 1154760.

It is an arithmetic number, because the mean of its divisors is an integer number (1780545228).

Almost surely, 2^20575944177 is an apocalyptic number.

It is an amenable number.

20575944177 is a deficient number, since it is larger than the sum of its proper divisors (7912779471).

20575944177 is a wasteful number, since it uses less digits than its factorization.

20575944177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291680.

The product of its (nonzero) digits is 2469600, while the sum is 51.

The spelling of 20575944177 in words is "twenty billion, five hundred seventy-five million, nine hundred forty-four thousand, one hundred seventy-seven".