11751731772 has 48 divisors (see below), whose sum is σ = 29920800000. Its totient is φ = 3560261760.

The previous prime is 11751731737. The next prime is 11751731773. The reversal of 11751731772 is 27713715711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11751731773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715104 + ... + 731352.

It is an arithmetic number, because the mean of its divisors is an integer number (623350000).

Almost surely, 2^11751731772 is an apocalyptic number.

11751731772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11751731772 is an abundant number, since it is smaller than the sum of its proper divisors (18169068228).

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

11751731772 is a wasteful number, since it uses less digits than its factorization.

11751731772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21746 (or 21744 counting only the distinct ones).

The product of its digits is 72030, while the sum is 42.

The spelling of 11751731772 in words is "eleven billion, seven hundred fifty-one million, seven hundred thirty-one thousand, seven hundred seventy-two".