15309828991393 has 2 divisors, whose sum is σ = 15309828991394. Its totient is φ = 15309828991392.

The previous prime is 15309828991309. The next prime is 15309828991417. The reversal of 15309828991393 is 39319982890351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9172006075024 + 6137822916369 = 3028532^2 + 2477463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15309828991393 is a prime.

It is not a weakly prime, because it can be changed into another prime (15309828391393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7654914495696 + 7654914495697.

It is an arithmetic number, because the mean of its divisors is an integer number (7654914495697).

Almost surely, 2^{15309828991393} is an apocalyptic number.

It is an amenable number.

15309828991393 is a deficient number, since it is larger than the sum of its proper divisors (1).

15309828991393 is an equidigital number, since it uses as much as digits as its factorization.

15309828991393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113374080, while the sum is 70.

The spelling of 15309828991393 in words is "fifteen trillion, three hundred nine billion, eight hundred twenty-eight million, nine hundred ninety-one thousand, three hundred ninety-three".