15293659679989 has 2 divisors, whose sum is σ = 15293659679990. Its totient is φ = 15293659679988.

The previous prime is 15293659679957. The next prime is 15293659680197. The reversal of 15293659679989 is 98997695639251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12033558599364 + 3260101080625 = 3468942^2 + 1805575^2 .

It is a cyclic number.

It is not a de Polignac number, because 15293659679989 - 2⁵ = 15293659679957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15293659679929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7646829839994 + 7646829839995.

It is an arithmetic number, because the mean of its divisors is an integer number (7646829839995).

Almost surely, 2^{15293659679989} is an apocalyptic number.

It is an amenable number.

15293659679989 is a deficient number, since it is larger than the sum of its proper divisors (1).

15293659679989 is an equidigital number, since it uses as much as digits as its factorization.

15293659679989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17856417600, while the sum is 88.

The spelling of 15293659679989 in words is "fifteen trillion, two hundred ninety-three billion, six hundred fifty-nine million, six hundred seventy-nine thousand, nine hundred eighty-nine".