11781337632 has 24 divisors (see below), whose sum is σ = 30926011536. Its totient is φ = 3927112512.

The previous prime is 11781337597. The next prime is 11781337693. The reversal of 11781337632 is 23673318711.

It is a tau number, because it is divible by the number of its divisors (24).

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, 61361038 + ... + 61361229.

It is an arithmetic number, because the mean of its divisors is an integer number (1288583814).

Almost surely, 2^11781337632 is an apocalyptic number.

11781337632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11781337632 is an abundant number, since it is smaller than the sum of its proper divisors (19144673904).

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

11781337632 is a wasteful number, since it uses less digits than its factorization.

11781337632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122722280 (or 122722272 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The spelling of 11781337632 in words is "eleven billion, seven hundred eighty-one million, three hundred thirty-seven thousand, six hundred thirty-two".