11634798641 has 4 divisors (see below), whose sum is σ = 11635053300. Its totient is φ = 11634543984.

The previous prime is 11634798577. The next prime is 11634798661. The reversal of 11634798641 is 14689743611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4007396416 + 7627402225 = 63304^2 + 87335^2 .

It is a cyclic number.

It is not a de Polignac number, because 11634798641 - 2⁶ = 11634798577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11634798641.

It is not an unprimeable number, because it can be changed into a prime (11634798661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37826 + ... + 157163.

It is an arithmetic number, because the mean of its divisors is an integer number (2908763325).

Almost surely, 2^11634798641 is an apocalyptic number.

It is an amenable number.

11634798641 is a deficient number, since it is larger than the sum of its proper divisors (254659).

11634798641 is an equidigital number, since it uses as much as digits as its factorization.

11634798641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254658.

The product of its digits is 870912, while the sum is 50.

The spelling of 11634798641 in words is "eleven billion, six hundred thirty-four million, seven hundred ninety-eight thousand, six hundred forty-one".