20795924899 has 8 divisors (see below), whose sum is σ = 20878074000. Its totient is φ = 20713812192.

The previous prime is 20795924893. The next prime is 20795924909. The reversal of 20795924899 is 99842959702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20795924899 - 2⁵ = 20795924867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20795924899.

It is not an unprimeable number, because it can be changed into a prime (20795924893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936557 + ... + 1947265.

It is an arithmetic number, because the mean of its divisors is an integer number (2609759250).

Almost surely, 2^20795924899 is an apocalyptic number.

20795924899 is a deficient number, since it is larger than the sum of its proper divisors (82149101).

20795924899 is a wasteful number, since it uses less digits than its factorization.

20795924899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18197.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 20795924899 in words is "twenty billion, seven hundred ninety-five million, nine hundred twenty-four thousand, eight hundred ninety-nine".