11781247744 has 36 divisors (see below), whose sum is σ = 26875975504. Its totient is φ = 5049105408.

The previous prime is 11781247727. The next prime is 11781247771. The reversal of 11781247744 is 44774218711.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11781247694 and 11781247703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285387 + ... + 3288970.

Almost surely, 2^11781247744 is an apocalyptic number.

11781247744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11781247744 is an abundant number, since it is smaller than the sum of its proper divisors (15094727760).

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

11781247744 is an frugal number, since it uses more digits than its factorization.

11781247744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574380 (or 6574366 counting only the distinct ones).

The product of its digits is 351232, while the sum is 46.

The spelling of 11781247744 in words is "eleven billion, seven hundred eighty-one million, two hundred forty-seven thousand, seven hundred forty-four".