20347923995 has 48 divisors (see below), whose sum is σ = 29363233536. Its totient is φ = 13483008000.

The previous prime is 20347923983. The next prime is 20347924067. The reversal of 20347923995 is 59932974302.

Together with 9015309540 it forms a betrothed pair.

It is not a de Polignac number, because 20347923995 - 2¹⁰ = 20347922971 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6689675 + ... + 6692715.

It is an arithmetic number, because the mean of its divisors is an integer number (611734032).

Almost surely, 2^20347923995 is an apocalyptic number.

20347923995 is a deficient number, since it is larger than the sum of its proper divisors (9015309541).

20347923995 is a wasteful number, since it uses less digits than its factorization.

20347923995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 53.

The spelling of 20347923995 in words is "twenty billion, three hundred forty-seven million, nine hundred twenty-three thousand, nine hundred ninety-five".