65263380165 has 48 divisors (see below), whose sum is σ = 117058846320. Its totient is φ = 33596881920.

The previous prime is 65263380157. The next prime is 65263380191. The reversal of 65263380165 is 56108336256.

65263380165 is a `hidden beast` number, since 6 + 5 + 2 + 633 + 8 + 0 + 1 + 6 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 11677611969 + 53585768196 = 108063^2 + 231486^2 .

It is not a de Polignac number, because 65263380165 - 2³ = 65263380157 is a prime.

It is a super-2 number, since 2×65263380165² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65263380165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6667575 + ... + 6677355.

It is an arithmetic number, because the mean of its divisors is an integer number (2438725965).

Almost surely, 2^65263380165 is an apocalyptic number.

It is an amenable number.

65263380165 is a deficient number, since it is larger than the sum of its proper divisors (51795466155).

65263380165 is a wasteful number, since it uses less digits than its factorization.

65263380165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14934 (or 14931 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 65263380165 in words is "sixty-five billion, two hundred sixty-three million, three hundred eighty thousand, one hundred sixty-five".