23973772561699 has 2 divisors, whose sum is σ = 23973772561700. Its totient is φ = 23973772561698.

The previous prime is 23973772561663. The next prime is 23973772561799. The reversal of 23973772561699 is 99616527737932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23973772561699 - 2⁴¹ = 21774749306147 is a prime.

It is not a weakly prime, because it can be changed into another prime (23973772561399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11986886280849 + 11986886280850.

It is an arithmetic number, because the mean of its divisors is an integer number (11986886280850).

Almost surely, 2^{23973772561699} is an apocalyptic number.

23973772561699 is a deficient number, since it is larger than the sum of its proper divisors (1).

23973772561699 is an equidigital number, since it uses as much as digits as its factorization.

23973772561699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620304560, while the sum is 76.

The spelling of 23973772561699 in words is "twenty-three trillion, nine hundred seventy-three billion, seven hundred seventy-two million, five hundred sixty-one thousand, six hundred ninety-nine".