15321011101393 has 2 divisors, whose sum is σ = 15321011101394. Its totient is φ = 15321011101392.

The previous prime is 15321011101259. The next prime is 15321011101421. The reversal of 15321011101393 is 39310111012351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9085088165904 + 6235922935489 = 3014148^2 + 2497183^2 .

It is an emirp because it is prime and its reverse (39310111012351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15321011101393 - 2⁹ = 15321011100881 is a prime.

It is not a weakly prime, because it can be changed into another prime (15321011101993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7660505550696 + 7660505550697.

It is an arithmetic number, because the mean of its divisors is an integer number (7660505550697).

Almost surely, 2^{15321011101393} is an apocalyptic number.

It is an amenable number.

15321011101393 is a deficient number, since it is larger than the sum of its proper divisors (1).

15321011101393 is an equidigital number, since it uses as much as digits as its factorization.

15321011101393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The spelling of 15321011101393 in words is "fifteen trillion, three hundred twenty-one billion, eleven million, one hundred one thousand, three hundred ninety-three".