11684155440 has 80 divisors (see below), whose sum is σ = 37389321216. Its totient is φ = 3015264000.

The previous prime is 11684155429. The next prime is 11684155487. The reversal of 11684155440 is 4455148611.

It is a tau number, because it is divible by the number of its divisors (80).

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, 777786 + ... + 792665.

Almost surely, 2^11684155440 is an apocalyptic number.

11684155440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11684155440 is an abundant number, since it is smaller than the sum of its proper divisors (25705165776).

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

11684155440 is a wasteful number, since it uses less digits than its factorization.

11684155440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570498 (or 1570492 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 11684155440 in words is "eleven billion, six hundred eighty-four million, one hundred fifty-five thousand, four hundred forty".