20633250577 has 16 divisors (see below), whose sum is σ = 21281242752. Its totient is φ = 19990229760.

The previous prime is 20633250553. The next prime is 20633250581. The reversal of 20633250577 is 77505233602.

It is a de Polignac number, because none of the positive numbers 2^k-20633250577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20633250877) 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, 10684302 + ... + 10686232.

It is an arithmetic number, because the mean of its divisors is an integer number (1330077672).

Almost surely, 2^20633250577 is an apocalyptic number.

It is an amenable number.

20633250577 is a deficient number, since it is larger than the sum of its proper divisors (647992175).

20633250577 is a wasteful number, since it uses less digits than its factorization.

20633250577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048.

The product of its (nonzero) digits is 264600, while the sum is 40.

The spelling of 20633250577 in words is "twenty billion, six hundred thirty-three million, two hundred fifty thousand, five hundred seventy-seven".