15100442121649 has 2 divisors, whose sum is σ = 15100442121650. Its totient is φ = 15100442121648.

The previous prime is 15100442121587. The next prime is 15100442121679. The reversal of 15100442121649 is 94612124400151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8695822481424 + 6404619640225 = 2948868^2 + 2530735^2 .

It is a cyclic number.

It is not a de Polignac number, because 15100442121649 - 2⁹ = 15100442121137 is a prime.

It is a super-3 number, since 3×15100442121649³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (15100442121679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7550221060824 + 7550221060825.

It is an arithmetic number, because the mean of its divisors is an integer number (7550221060825).

Almost surely, 2^{15100442121649} is an apocalyptic number.

It is an amenable number.

15100442121649 is a deficient number, since it is larger than the sum of its proper divisors (1).

15100442121649 is an equidigital number, since it uses as much as digits as its factorization.

15100442121649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 15100442121649 in words is "fifteen trillion, one hundred billion, four hundred forty-two million, one hundred twenty-one thousand, six hundred forty-nine".