20263115173 has 16 divisors (see below), whose sum is σ = 23464304640. Its totient is φ = 17140040496.

The previous prime is 20263115143. The next prime is 20263115179. The reversal of 20263115173 is 37151136202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20263115173 - 2⁵ = 20263115141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20263115179) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 100140 + ... + 224842.

It is an arithmetic number, because the mean of its divisors is an integer number (1466519040).

Almost surely, 2^20263115173 is an apocalyptic number.

It is an amenable number.

20263115173 is a deficient number, since it is larger than the sum of its proper divisors (3201189467).

20263115173 is a wasteful number, since it uses less digits than its factorization.

20263115173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125016.

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 20263115173 in words is "twenty billion, two hundred sixty-three million, one hundred fifteen thousand, one hundred seventy-three".