11718075507721 has 8 divisors (see below), whose sum is σ = 12785426023104. Its totient is φ = 10651070146320.

The previous prime is 11718075507703. The next prime is 11718075507737. The reversal of 11718075507721 is 12770557081711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11718075507721 - 2⁵ = 11718075507689 is a prime.

It is a super-2 number, since 2×11718075507721² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11718075507121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86217501 + ... + 86353306.

It is an arithmetic number, because the mean of its divisors is an integer number (1598178252888).

Almost surely, 2^{11718075507721} is an apocalyptic number.

11718075507721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11718075507721 is a deficient number, since it is larger than the sum of its proper divisors (1067350515383).

11718075507721 is a wasteful number, since it uses less digits than its factorization.

11718075507721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172576991.

The product of its (nonzero) digits is 960400, while the sum is 52.

The spelling of 11718075507721 in words is "eleven trillion, seven hundred eighteen billion, seventy-five million, five hundred seven thousand, seven hundred twenty-one".