11715464644 has 81 divisors (see below), whose sum is σ = 23336590599. Its totient is φ = 5143469760.

The previous prime is 11715464611. The next prime is 11715464671. The reversal of 11715464644 is 44646451711.

The square root of 11715464644 is 108238.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9023100100 + 2692364544 = 94990^2 + 51888^2 .

It is a super-2 number, since 2×11715464644² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11715464644.

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, 64726234 + ... + 64726414.

Almost surely, 2^11715464644 is an apocalyptic number.

11715464644 is the 108238-th square number.

It is an amenable number.

11715464644 is a deficient number, since it is larger than the sum of its proper divisors (11621125955).

11715464644 is a wasteful number, since it uses less digits than its factorization.

11715464644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 219 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The spelling of 11715464644 in words is "eleven billion, seven hundred fifteen million, four hundred sixty-four thousand, six hundred forty-four".