11946665456731 has 2 divisors, whose sum is σ = 11946665456732. Its totient is φ = 11946665456730.

The previous prime is 11946665456701. The next prime is 11946665456749. The reversal of 11946665456731 is 13765456664911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11946665456731 - 2²⁷ = 11946531239003 is a prime.

It is a super-2 number, since 2×11946665456731² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11946665456701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973332728365 + 5973332728366.

It is an arithmetic number, because the mean of its divisors is an integer number (5973332728366).

Almost surely, 2^{11946665456731} is an apocalyptic number.

11946665456731 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946665456731 is an equidigital number, since it uses as much as digits as its factorization.

11946665456731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 64.

The spelling of 11946665456731 in words is "eleven trillion, nine hundred forty-six billion, six hundred sixty-five million, four hundred fifty-six thousand, seven hundred thirty-one".