11549759401680 has 80 divisors (see below), whose sum is σ = 35812131787584. Its totient is φ = 3079258193920.

The previous prime is 11549759401651. The next prime is 11549759401717. The reversal of 11549759401680 is 8610495794511.

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

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4200561 + ... + 6383120.

Almost surely, 2^{11549759401680} is an apocalyptic number.

11549759401680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11549759401680 is an abundant number, since it is smaller than the sum of its proper divisors (24262372385904).

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

11549759401680 is a wasteful number, since it uses less digits than its factorization.

11549759401680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588244 (or 10588238 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 11549759401680 in words is "eleven trillion, five hundred forty-nine billion, seven hundred fifty-nine million, four hundred one thousand, six hundred eighty".