11523850681 has 8 divisors (see below), whose sum is σ = 13171037184. Its totient is φ = 9876894720.

The previous prime is 11523850649. The next prime is 11523850687. The reversal of 11523850681 is 18605832511.

It is a happy number.

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

It is not a de Polignac number, because 11523850681 - 2⁵ = 11523850649 is a prime.

It is a super-2 number, since 2×11523850681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11523850687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67641 + ... + 166201.

It is an arithmetic number, because the mean of its divisors is an integer number (1646379648).

Almost surely, 2^11523850681 is an apocalyptic number.

It is an amenable number.

11523850681 is a deficient number, since it is larger than the sum of its proper divisors (1647186503).

11523850681 is an equidigital number, since it uses as much as digits as its factorization.

11523850681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115271.

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 11523850681 in words is "eleven billion, five hundred twenty-three million, eight hundred fifty thousand, six hundred eighty-one".