11719794564 has 27 divisors (see below), whose sum is σ = 29626678263. Its totient is φ = 3906381672.

The previous prime is 11719794553. The next prime is 11719794587. The reversal of 11719794564 is 46549791711.

It is a happy number.

The square root of 11719794564 is 108258.

It is a perfect power (a square), and thus also a powerful number.

11719794564 is a `hidden beast` number, since 1 + 1 + 7 + 1 + 9 + 79 + 4 + 564 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 11719794564.

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 8 ways as a sum of consecutive naturals, for example, 640527 + ... + 658569.

Almost surely, 2^11719794564 is an apocalyptic number.

11719794564 is the 108258-th square number.

It is an amenable number.

11719794564 is an abundant number, since it is smaller than the sum of its proper divisors (17906883699).

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

11719794564 is an frugal number, since it uses more digits than its factorization.

11719794564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36096 (or 18048 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The spelling of 11719794564 in words is "eleven billion, seven hundred nineteen million, seven hundred ninety-four thousand, five hundred sixty-four".