15321135250079 has 2 divisors, whose sum is σ = 15321135250080. Its totient is φ = 15321135250078.

The previous prime is 15321135249997. The next prime is 15321135250081. The reversal of 15321135250079 is 97005253112351.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15321135250079 is a prime.

Together with 15321135250081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15321135250279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7660567625039 + 7660567625040.

It is an arithmetic number, because the mean of its divisors is an integer number (7660567625040).

Almost surely, 2^{15321135250079} is an apocalyptic number.

15321135250079 is a deficient number, since it is larger than the sum of its proper divisors (1).

15321135250079 is an equidigital number, since it uses as much as digits as its factorization.

15321135250079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283500, while the sum is 44.

The spelling of 15321135250079 in words is "fifteen trillion, three hundred twenty-one billion, one hundred thirty-five million, two hundred fifty thousand, seventy-nine".