11621644105734 has 72 divisors (see below), whose sum is σ = 27516314105280. Its totient is φ = 3543084058176.

The previous prime is 11621644105727. The next prime is 11621644105783. The reversal of 11621644105734 is 43750144612611.

11621644105734 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 1 + 64 + 4 + 10 + 573 + 4 = 666.

It is a super-2 number, since 2×11621644105734² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11621644105734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17193174 + ... + 17856329.

It is an arithmetic number, because the mean of its divisors is an integer number (382171029240).

Almost surely, 2^{11621644105734} is an apocalyptic number.

11621644105734 is an abundant number, since it is smaller than the sum of its proper divisors (15894669999546).

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

11621644105734 is a wasteful number, since it uses less digits than its factorization.

11621644105734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35049646 (or 35049630 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 11621644105734 in words is "eleven trillion, six hundred twenty-one billion, six hundred forty-four million, one hundred five thousand, seven hundred thirty-four".