2113634235465 has 24 divisors (see below), whose sum is σ = 3723692231688. Its totient is φ = 1108791728640.

The previous prime is 2113634235439. The next prime is 2113634235509. The reversal of 2113634235465 is 5645324363112.

2113634235465 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 63 + 42 + 3 + 546 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13398525504 + 2100235709961 = 115752^2 + 1449219^2 .

It is not a de Polignac number, because 2113634235465 - 2²¹ = 2113632138313 is a prime.

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 2113634235465.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384994384 + ... + 384999873.

It is an arithmetic number, because the mean of its divisors is an integer number (155153842987).

Almost surely, 2^{2113634235465} is an apocalyptic number.

It is an amenable number.

2113634235465 is a deficient number, since it is larger than the sum of its proper divisors (1610057996223).

2113634235465 is a wasteful number, since it uses less digits than its factorization.

2113634235465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769994329 (or 769994326 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

Adding to 2113634235465 its reverse (5645324363112), we get a palindrome (7758958598577).

The spelling of 2113634235465 in words is "two trillion, one hundred thirteen billion, six hundred thirty-four million, two hundred thirty-five thousand, four hundred sixty-five".