1299674853968 has 20 divisors (see below), whose sum is σ = 2565631729908. Its totient is φ = 637576343040.

The previous prime is 1299674853923. The next prime is 1299674853973. The reversal of 1299674853968 is 8693584769921.

It can be written as a sum of positive squares in 2 ways, for example, as 361047160384 + 938627693584 = 600872^2 + 968828^2 .

It is a congruent number.

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, 766316873 + ... + 766318568.

Almost surely, 2^{1299674853968} is an apocalyptic number.

It is an amenable number.

1299674853968 is a deficient number, since it is larger than the sum of its proper divisors (1265956875940).

1299674853968 is a wasteful number, since it uses less digits than its factorization.

1299674853968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532635502 (or 1532635496 counting only the distinct ones).

The product of its digits is 1410877440, while the sum is 77.

The spelling of 1299674853968 in words is "one trillion, two hundred ninety-nine billion, six hundred seventy-four million, eight hundred fifty-three thousand, nine hundred sixty-eight".