11949537744 has 80 divisors (see below), whose sum is σ = 34473954240. Its totient is φ = 3962931840.

The previous prime is 11949537727. The next prime is 11949537773. The reversal of 11949537744 is 44773594911.

11949537744 is a `hidden beast` number, since 11 + 94 + 9 + 537 + 7 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14899 + ... + 155309.

It is an arithmetic number, because the mean of its divisors is an integer number (430924428).

Almost surely, 2^11949537744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11949537744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17236977120).

11949537744 is an abundant number, since it is smaller than the sum of its proper divisors (22524416496).

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

11949537744 is a wasteful number, since it uses less digits than its factorization.

11949537744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140625 (or 140613 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 11949537744 in words is "eleven billion, nine hundred forty-nine million, five hundred thirty-seven thousand, seven hundred forty-four".