20323111995 has 48 divisors (see below), whose sum is σ = 36804635712. Its totient is φ = 10354671360.

The previous prime is 20323111981. The next prime is 20323112011. The reversal of 20323111995 is 59911132302.

It is not a de Polignac number, because 20323111995 - 2⁷ = 20323111867 is a prime.

It is a super-2 number, since 2×20323111995² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 837777 + ... + 861693.

It is an arithmetic number, because the mean of its divisors is an integer number (766763244).

Almost surely, 2^20323111995 is an apocalyptic number.

20323111995 is a deficient number, since it is larger than the sum of its proper divisors (16481523717).

20323111995 is a wasteful number, since it uses less digits than its factorization.

20323111995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24772 (or 24769 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The spelling of 20323111995 in words is "twenty billion, three hundred twenty-three million, one hundred eleven thousand, nine hundred ninety-five".