11723662086581 has 8 divisors (see below), whose sum is σ = 12415974385344. Its totient is φ = 11046565442880.

The previous prime is 11723662086547. The next prime is 11723662086659. The reversal of 11723662086581 is 18568026632711.

11723662086581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11723662086581 is a prime.

It is a super-2 number, since 2×11723662086581² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11723662088581) 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, 3803912180 + ... + 3803915261.

It is an arithmetic number, because the mean of its divisors is an integer number (1551996798168).

Almost surely, 2^{11723662086581} is an apocalyptic number.

It is an amenable number.

11723662086581 is a deficient number, since it is larger than the sum of its proper divisors (692312298763).

11723662086581 is an equidigital number, since it uses as much as digits as its factorization.

11723662086581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607827531.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 11723662086581 in words is "eleven trillion, seven hundred twenty-three billion, six hundred sixty-two million, eighty-six thousand, five hundred eighty-one".