11546491644 has 36 divisors (see below), whose sum is σ = 29454745320. Its totient is φ = 3813518880.

The previous prime is 11546491637. The next prime is 11546491741. The reversal of 11546491644 is 44619464511.

11546491644 is a `hidden beast` number, since 1 + 1 + 546 + 49 + 1 + 64 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11546491644.

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 11 ways as a sum of consecutive naturals, for example, 1467342 + ... + 1475189.

It is an arithmetic number, because the mean of its divisors is an integer number (818187370).

Almost surely, 2^11546491644 is an apocalyptic number.

It is an amenable number.

11546491644 is an abundant number, since it is smaller than the sum of its proper divisors (17908253676).

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

11546491644 is a wasteful number, since it uses less digits than its factorization.

11546491644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942650 (or 2942645 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 11546491644 in words is "eleven billion, five hundred forty-six million, four hundred ninety-one thousand, six hundred forty-four".