11651111115673 has 2 divisors, whose sum is σ = 11651111115674. Its totient is φ = 11651111115672.

The previous prime is 11651111115607. The next prime is 11651111115697. The reversal of 11651111115673 is 37651111115611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10596932515849 + 1054178599824 = 3255293^2 + 1026732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11651111115673 is a prime.

It is not a weakly prime, because it can be changed into another prime (11651111125673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825555557836 + 5825555557837.

It is an arithmetic number, because the mean of its divisors is an integer number (5825555557837).

Almost surely, 2^{11651111115673} is an apocalyptic number.

It is an amenable number.

11651111115673 is a deficient number, since it is larger than the sum of its proper divisors (1).

11651111115673 is an equidigital number, since it uses as much as digits as its factorization.

11651111115673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 40.

The spelling of 11651111115673 in words is "eleven trillion, six hundred fifty-one billion, one hundred eleven million, one hundred fifteen thousand, six hundred seventy-three".