10591387559021 has 2 divisors, whose sum is σ = 10591387559022. Its totient is φ = 10591387559020.

The previous prime is 10591387558993. The next prime is 10591387559083. The reversal of 10591387559021 is 12095578319501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6730594846921 + 3860792712100 = 2594339^2 + 1964890^2 .

It is a cyclic number.

It is not a de Polignac number, because 10591387559021 - 2³⁰ = 10590313817197 is a prime.

It is a super-2 number, since 2×10591387559021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10591387550021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5295693779510 + 5295693779511.

It is an arithmetic number, because the mean of its divisors is an integer number (5295693779511).

Almost surely, 2^{10591387559021} is an apocalyptic number.

It is an amenable number.

10591387559021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10591387559021 is an equidigital number, since it uses as much as digits as its factorization.

10591387559021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 56.

The spelling of 10591387559021 in words is "ten trillion, five hundred ninety-one billion, three hundred eighty-seven million, five hundred fifty-nine thousand, twenty-one".