15329730393961 has 2 divisors, whose sum is σ = 15329730393962. Its totient is φ = 15329730393960.

The previous prime is 15329730393889. The next prime is 15329730393973. The reversal of 15329730393961 is 16939303792351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12595535862361 + 2734194531600 = 3549019^2 + 1653540^2 .

It is a cyclic number.

It is not a de Polignac number, because 15329730393961 - 2¹⁹ = 15329729869673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15329730393961.

It is not a weakly prime, because it can be changed into another prime (15329730393361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664865196980 + 7664865196981.

It is an arithmetic number, because the mean of its divisors is an integer number (7664865196981).

Almost surely, 2^{15329730393961} is an apocalyptic number.

It is an amenable number.

15329730393961 is a deficient number, since it is larger than the sum of its proper divisors (1).

15329730393961 is an equidigital number, since it uses as much as digits as its factorization.

15329730393961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24800580, while the sum is 61.

The spelling of 15329730393961 in words is "fifteen trillion, three hundred twenty-nine billion, seven hundred thirty million, three hundred ninety-three thousand, nine hundred sixty-one".