20045506875 has 40 divisors (see below), whose sum is σ = 34550252880. Its totient is φ = 10322256000.

The previous prime is 20045506861. The next prime is 20045506937. The reversal of 20045506875 is 57860554002.

It is not a de Polignac number, because 20045506875 - 2¹² = 20045502779 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 129952 + ... + 238701.

It is an arithmetic number, because the mean of its divisors is an integer number (863756322).

Almost surely, 2^20045506875 is an apocalyptic number.

20045506875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20045506875 is a deficient number, since it is larger than the sum of its proper divisors (14504746005).

20045506875 is an equidigital number, since it uses as much as digits as its factorization.

20045506875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368705 (or 368690 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 20045506875 in words is "twenty billion, forty-five million, five hundred six thousand, eight hundred seventy-five".