11721688760 has 32 divisors (see below), whose sum is σ = 26389808640. Its totient is φ = 4685829504.

The previous prime is 11721688757. The next prime is 11721688787. The reversal of 11721688760 is 6788612711.

It is a super-3 number, since 3×11721688760³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21587 + ... + 154626.

It is an arithmetic number, because the mean of its divisors is an integer number (824681520).

Almost surely, 2^11721688760 is an apocalyptic number.

11721688760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11721688760 is an abundant number, since it is smaller than the sum of its proper divisors (14668119880).

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

11721688760 is a wasteful number, since it uses less digits than its factorization.

11721688760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177887 (or 177883 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 11721688760 in words is "eleven billion, seven hundred twenty-one million, six hundred eighty-eight thousand, seven hundred sixty".