20750880945 has 32 divisors (see below), whose sum is σ = 34674676992. Its totient is φ = 10576873472.

The previous prime is 20750880883. The next prime is 20750880949. The reversal of 20750880945 is 54908805702.

It is not a de Polignac number, because 20750880945 - 2⁶ = 20750880881 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20750880894 and 20750880903.

It is not an unprimeable number, because it can be changed into a prime (20750880949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386377 + ... + 436793.

It is an arithmetic number, because the mean of its divisors is an integer number (1083583656).

Almost surely, 2^20750880945 is an apocalyptic number.

It is an amenable number.

20750880945 is a deficient number, since it is larger than the sum of its proper divisors (13923796047).

20750880945 is a wasteful number, since it uses less digits than its factorization.

20750880945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51641.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 20750880945 in words is "twenty billion, seven hundred fifty million, eight hundred eighty thousand, nine hundred forty-five".