12540816298 has 8 divisors (see below), whose sum is σ = 18997474500. Its totient is φ = 6208324800.

The previous prime is 12540816287. The next prime is 12540816319. The reversal of 12540816298 is 89261804521.

It can be written as a sum of positive squares in 2 ways, for example, as 12418204969 + 122611329 = 111437^2 + 11073^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31041423 + ... + 31041826.

Almost surely, 2^12540816298 is an apocalyptic number.

12540816298 is a deficient number, since it is larger than the sum of its proper divisors (6456658202).

12540816298 is a wasteful number, since it uses less digits than its factorization.

12540816298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62083352.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 12540816298 in words is "twelve billion, five hundred forty million, eight hundred sixteen thousand, two hundred ninety-eight".