11634642344 has 32 divisors (see below), whose sum is σ = 23506549920. Its totient is φ = 5366744256.

The previous prime is 11634642317. The next prime is 11634642347. The reversal of 11634642344 is 44324643611.

It is a junction number, because it is equal to n+sod(n) for n = 11634642298 and 11634642307.

It is not an unprimeable number, because it can be changed into a prime (11634642347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154547 + ... + 217149.

It is an arithmetic number, because the mean of its divisors is an integer number (734579685).

Almost surely, 2^11634642344 is an apocalyptic number.

It is an amenable number.

11634642344 is an abundant number, since it is smaller than the sum of its proper divisors (11871907576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11634642344 is a wasteful number, since it uses less digits than its factorization.

11634642344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64409 (or 64405 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The spelling of 11634642344 in words is "eleven billion, six hundred thirty-four million, six hundred forty-two thousand, three hundred forty-four".