20020019975 has 12 divisors (see below), whose sum is σ = 24844581720. Its totient is φ = 16003269600.

The previous prime is 20020019969. The next prime is 20020020017. The reversal of 20020019975 is 57991002002.

It is not a de Polignac number, because 20020019975 - 2¹⁸ = 20019757831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286556 + ... + 349505.

It is an arithmetic number, because the mean of its divisors is an integer number (2070381810).

Almost surely, 2^20020019975 is an apocalyptic number.

20020019975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20020019975 is a deficient number, since it is larger than the sum of its proper divisors (4824561745).

20020019975 is a wasteful number, since it uses less digits than its factorization.

20020019975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637330 (or 637325 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

It can be divided in two parts, 2002001997 and 5, that added together give a palindrome (2002002002).

The spelling of 20020019975 in words is "twenty billion, twenty million, nineteen thousand, nine hundred seventy-five".