20011319975 has 24 divisors (see below), whose sum is σ = 25898936112. Its totient is φ = 15323859200.

The previous prime is 20011319971. The next prime is 20011319987. The reversal of 20011319975 is 57991311002.

It is not a de Polignac number, because 20011319975 - 2² = 20011319971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011319971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129857 + ... + 238506.

It is an arithmetic number, because the mean of its divisors is an integer number (1079122338).

Almost surely, 2^20011319975 is an apocalyptic number.

20011319975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20011319975 is a deficient number, since it is larger than the sum of its proper divisors (5887616137).

20011319975 is a wasteful number, since it uses less digits than its factorization.

20011319975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368467 (or 368462 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 38.

The spelling of 20011319975 in words is "twenty billion, eleven million, three hundred nineteen thousand, nine hundred seventy-five".