11634544644 has 48 divisors (see below), whose sum is σ = 27428139648. Its totient is φ = 3838259968.

The previous prime is 11634544637. The next prime is 11634544657. The reversal of 11634544644 is 44644543611.

It is a happy number.

It is a super-4 number, since 4×11634544644⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11634544596 and 11634544605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454474 + ... + 479390.

It is an arithmetic number, because the mean of its divisors is an integer number (571419576).

Almost surely, 2^11634544644 is an apocalyptic number.

It is an amenable number.

11634544644 is an abundant number, since it is smaller than the sum of its proper divisors (15793595004).

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

11634544644 is a wasteful number, since it uses less digits than its factorization.

11634544644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25324 (or 25322 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The spelling of 11634544644 in words is "eleven billion, six hundred thirty-four million, five hundred forty-four thousand, six hundred forty-four".