1299957671376 has 240 divisors, whose sum is σ = 4506159059584. Its totient is φ = 340661707776.

The previous prime is 1299957671323. The next prime is 1299957671413. The reversal of 1299957671376 is 6731767599921.

1299957671376 is a `hidden beast` number, since 12 + 9 + 9 + 9 + 576 + 7 + 1 + 37 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1741395 + ... + 2373261.

Almost surely, 2^{1299957671376} is an apocalyptic number.

1299957671376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299957671376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2253079529792).

1299957671376 is an abundant number, since it is smaller than the sum of its proper divisors (3206201388208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299957671376 is a wasteful number, since it uses less digits than its factorization.

1299957671376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632058 (or 632049 counting only the distinct ones).

The product of its digits is 270050760, while the sum is 72.

The spelling of 1299957671376 in words is "one trillion, two hundred ninety-nine billion, nine hundred fifty-seven million, six hundred seventy-one thousand, three hundred seventy-six".