15150340439681 has 2 divisors, whose sum is σ = 15150340439682. Its totient is φ = 15150340439680.

The previous prime is 15150340439659. The next prime is 15150340439683. The reversal of 15150340439681 is 18693404305151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14380932528400 + 769407911281 = 3792220^2 + 877159^2 .

It is an emirp because it is prime and its reverse (18693404305151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15150340439681 - 2⁶ = 15150340439617 is a prime.

It is a super-2 number, since 2×15150340439681² (a number of 27 digits) contains 22 as substring.

Together with 15150340439683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15150340439683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7575170219840 + 7575170219841.

It is an arithmetic number, because the mean of its divisors is an integer number (7575170219841).

Almost surely, 2^{15150340439681} is an apocalyptic number.

It is an amenable number.

15150340439681 is a deficient number, since it is larger than the sum of its proper divisors (1).

15150340439681 is an equidigital number, since it uses as much as digits as its factorization.

15150340439681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 15150340439681 in words is "fifteen trillion, one hundred fifty billion, three hundred forty million, four hundred thirty-nine thousand, six hundred eighty-one".