11531335634 has 64 divisors (see below), whose sum is σ = 21566684160. Its totient is φ = 4502615040.

The previous prime is 11531335631. The next prime is 11531335679. The reversal of 11531335634 is 43653313511.

It is a junction number, because it is equal to n+sod(n) for n = 11531335594 and 11531335603.

It is not an unprimeable number, because it can be changed into a prime (11531335631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5572352 + ... + 5574420.

It is an arithmetic number, because the mean of its divisors is an integer number (336979440).

Almost surely, 2^11531335634 is an apocalyptic number.

11531335634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11531335634 is a deficient number, since it is larger than the sum of its proper divisors (10035348526).

11531335634 is a wasteful number, since it uses less digits than its factorization.

11531335634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475.

The product of its digits is 48600, while the sum is 35.

The spelling of 11531335634 in words is "eleven billion, five hundred thirty-one million, three hundred thirty-five thousand, six hundred thirty-four".