23638856511757 has 2 divisors, whose sum is σ = 23638856511758. Its totient is φ = 23638856511756.

The previous prime is 23638856511533. The next prime is 23638856511779. The reversal of 23638856511757 is 75711565883632.

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., 23026235656356 + 612620855401 = 4798566^2 + 782701^2 .

It is a cyclic number.

It is not a de Polignac number, because 23638856511757 - 2⁴³ = 14842763489549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23638856511692 and 23638856511701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23638856511797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11819428255878 + 11819428255879.

It is an arithmetic number, because the mean of its divisors is an integer number (11819428255879).

Almost surely, 2^{23638856511757} is an apocalyptic number.

It is an amenable number.

23638856511757 is a deficient number, since it is larger than the sum of its proper divisors (1).

23638856511757 is an equidigital number, since it uses as much as digits as its factorization.

23638856511757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016000, while the sum is 67.

The spelling of 23638856511757 in words is "twenty-three trillion, six hundred thirty-eight billion, eight hundred fifty-six million, five hundred eleven thousand, seven hundred fifty-seven".