23036621793517 has 2 divisors, whose sum is σ = 23036621793518. Its totient is φ = 23036621793516.

The previous prime is 23036621793491. The next prime is 23036621793623. The reversal of 23036621793517 is 71539712663032.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20471950864836 + 2564670928681 = 4524594^2 + 1601459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23036621793517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23036621793917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11518310896758 + 11518310896759.

It is an arithmetic number, because the mean of its divisors is an integer number (11518310896759).

Almost surely, 2^{23036621793517} is an apocalyptic number.

It is an amenable number.

23036621793517 is a deficient number, since it is larger than the sum of its proper divisors (1).

23036621793517 is an equidigital number, since it uses as much as digits as its factorization.

23036621793517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8573040, while the sum is 55.

The spelling of 23036621793517 in words is "twenty-three trillion, thirty-six billion, six hundred twenty-one million, seven hundred ninety-three thousand, five hundred seventeen".