15457297706929 has 9 divisors (see below), whose sum is σ = 16737839252193. Its totient is φ = 14268227627472.

The previous prime is 15457297706923. The next prime is 15457297706941. The reversal of 15457297706929 is 92960779275451.

The square root of 15457297706929 is 3931577.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 829365383025 + 14627932323904 = 910695^2 + 3824648^2 .

It is not a de Polignac number, because 15457297706929 - 2¹⁹ = 15457297182641 is a prime.

It is a super-2 number, since 2×15457297706929² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15457297706923) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50959287 + ... + 51261715.

Almost surely, 2^{15457297706929} is an apocalyptic number.

15457297706929 is the 3931577-th square number.

15457297706929 is the 1965789-th centered octagonal number.

It is an amenable number.

15457297706929 is a deficient number, since it is larger than the sum of its proper divisors (1280541545264).

15457297706929 is an frugal number, since it uses more digits than its factorization.

15457297706929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604884 (or 302442 counting only the distinct ones).

The product of its (nonzero) digits is 600112800, while the sum is 73.

The spelling of 15457297706929 in words is "fifteen trillion, four hundred fifty-seven billion, two hundred ninety-seven million, seven hundred six thousand, nine hundred twenty-nine".