20397810795 has 16 divisors (see below), whose sum is σ = 32638536960. Its totient is φ = 10878152544.

The previous prime is 20397810781. The next prime is 20397810841. The reversal of 20397810795 is 59701879302.

It is not a de Polignac number, because 20397810795 - 2¹⁶ = 20397745259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288882 + ... + 352488.

It is an arithmetic number, because the mean of its divisors is an integer number (2039908560).

Almost surely, 2^20397810795 is an apocalyptic number.

20397810795 is a deficient number, since it is larger than the sum of its proper divisors (12240726165).

20397810795 is a wasteful number, since it uses less digits than its factorization.

20397810795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84994.

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 20397810795 in words is "twenty billion, three hundred ninety-seven million, eight hundred ten thousand, seven hundred ninety-five".