11644999744 has 189 divisors, whose sum is σ = 28151102829. Its totient is φ = 4765393920.

The previous prime is 11644999739. The next prime is 11644999771. The reversal of 11644999744 is 44799944611.

The square root of 11644999744 is 107912.

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

It can be written as a sum of positive squares in only one way, i.e., 561121344 + 11083878400 = 23688^2 + 105280^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 247765929 + ... + 247765975.

Almost surely, 2^11644999744 is an apocalyptic number.

11644999744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11644999744 is the 107912-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11644999744

11644999744 is an abundant number, since it is smaller than the sum of its proper divisors (16506103085).

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

11644999744 is an frugal number, since it uses more digits than its factorization.

11644999744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 97 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The spelling of 11644999744 in words is "eleven billion, six hundred forty-four million, nine hundred ninety-nine thousand, seven hundred forty-four".