65138119922 has 18 divisors (see below), whose sum is σ = 98234628879. Its totient is φ = 32394185500.

The previous prime is 65138119913. The next prime is 65138119927. The reversal of 65138119922 is 22991183156.

65138119922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32569059961 + 32569059961 = 180469^2 + 180469^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=180469.

It is a Duffinian number.

Its product of digits (233280) is a multiple of the sum of its prime divisors (972).

It is not an unprimeable number, because it can be changed into a prime (65138119927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 90595079 + ... + 90595797.

Almost surely, 2^65138119922 is an apocalyptic number.

65138119922 is a deficient number, since it is larger than the sum of its proper divisors (33096508957).

65138119922 is an frugal number, since it uses more digits than its factorization.

65138119922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942 (or 972 counting only the distinct ones).

The product of its digits is 233280, while the sum is 47.

The spelling of 65138119922 in words is "sixty-five billion, one hundred thirty-eight million, one hundred nineteen thousand, nine hundred twenty-two".