11621363127817 has 2 divisors, whose sum is σ = 11621363127818. Its totient is φ = 11621363127816.

The previous prime is 11621363127749. The next prime is 11621363127827. The reversal of 11621363127817 is 71872136312611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9050163705801 + 2571199422016 = 3008349^2 + 1603496^2 .

It is a cyclic number.

It is not a de Polignac number, because 11621363127817 - 2²³ = 11621354739209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11621363127827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810681563908 + 5810681563909.

It is an arithmetic number, because the mean of its divisors is an integer number (5810681563909).

Almost surely, 2^{11621363127817} is an apocalyptic number.

It is an amenable number.

11621363127817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621363127817 is an equidigital number, since it uses as much as digits as its factorization.

11621363127817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The spelling of 11621363127817 in words is "eleven trillion, six hundred twenty-one billion, three hundred sixty-three million, one hundred twenty-seven thousand, eight hundred seventeen".