1299020944516 has 45 divisors (see below), whose sum is σ = 2353030792805. Its totient is φ = 627498557760.

The previous prime is 1299020944493. The next prime is 1299020944553. The reversal of 1299020944516 is 6154490209921.

The square root of 1299020944516 is 1139746.

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

It can be written as a sum of positive squares in only one way, i.e., 798753312900 + 500267631616 = 893730^2 + 707296^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2190591516 + ... + 2190592108.

Almost surely, 2^{1299020944516} is an apocalyptic number.

1299020944516 is the 1139746-th square number.

It is an amenable number.

1299020944516 is a deficient number, since it is larger than the sum of its proper divisors (1054009848289).

1299020944516 is an frugal number, since it uses more digits than its factorization.

1299020944516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 1299020944516 in words is "one trillion, two hundred ninety-nine billion, twenty million, nine hundred forty-four thousand, five hundred sixteen".