15396496729 has 2 divisors, whose sum is σ = 15396496730. Its totient is φ = 15396496728.

The previous prime is 15396496681. The next prime is 15396496741. The reversal of 15396496729 is 92769469351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14209832025 + 1186664704 = 119205^2 + 34448^2 .

It is a cyclic number.

It is not a de Polignac number, because 15396496729 - 2²¹ = 15394399577 is a prime.

It is a super-2 number, since 2×15396496729² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15396496789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7698248364 + 7698248365.

It is an arithmetic number, because the mean of its divisors is an integer number (7698248365).

Almost surely, 2^15396496729 is an apocalyptic number.

It is an amenable number.

15396496729 is a deficient number, since it is larger than the sum of its proper divisors (1).

15396496729 is an equidigital number, since it uses as much as digits as its factorization.

15396496729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22044960, while the sum is 61.

The spelling of 15396496729 in words is "fifteen billion, three hundred ninety-six million, four hundred ninety-six thousand, seven hundred twenty-nine".