20823347368 has 32 divisors (see below), whose sum is σ = 39891657600. Its totient is φ = 10185763072.

The previous prime is 20823347353. The next prime is 20823347423. The reversal of 20823347368 is 86374332802.

It is a super-2 number, since 2×20823347368² (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 7 ways as a sum of consecutive naturals, for example, 970371 + ... + 991597.

It is an arithmetic number, because the mean of its divisors is an integer number (1246614300).

Almost surely, 2^20823347368 is an apocalyptic number.

It is an amenable number.

20823347368 is a deficient number, since it is larger than the sum of its proper divisors (19068310232).

20823347368 is a wasteful number, since it uses less digits than its factorization.

20823347368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23889 (or 23885 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 20823347368 in words is "twenty billion, eight hundred twenty-three million, three hundred forty-seven thousand, three hundred sixty-eight".