23154372662779 has 2 divisors, whose sum is σ = 23154372662780. Its totient is φ = 23154372662778.

The previous prime is 23154372662719. The next prime is 23154372662849. The reversal of 23154372662779 is 97726627345132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23154372662779 is a prime.

It is a super-2 number, since 2×23154372662779² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23154372662779.

It is not a weakly prime, because it can be changed into another prime (23154372662719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11577186331389 + 11577186331390.

It is an arithmetic number, because the mean of its divisors is an integer number (11577186331390).

Almost surely, 2^{23154372662779} is an apocalyptic number.

23154372662779 is a deficient number, since it is larger than the sum of its proper divisors (1).

23154372662779 is an equidigital number, since it uses as much as digits as its factorization.

23154372662779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 64.

The spelling of 23154372662779 in words is "twenty-three trillion, one hundred fifty-four billion, three hundred seventy-two million, six hundred sixty-two thousand, seven hundred seventy-nine".