1299371992576 has 160 divisors (see below), whose sum is σ = 3038366960640. Its totient is φ = 543560564736.

The previous prime is 1299371992573. The next prime is 1299371992637. The reversal of 1299371992576 is 6752991739921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299371992573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63831616 + ... + 63851968.

It is an arithmetic number, because the mean of its divisors is an integer number (18989793504).

Almost surely, 2^{1299371992576} is an apocalyptic number.

1299371992576 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 1299371992576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519183480320).

1299371992576 is an abundant number, since it is smaller than the sum of its proper divisors (1738994968064).

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

1299371992576 is an equidigital number, since it uses as much as digits as its factorization.

1299371992576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20804 (or 20788 counting only the distinct ones).

The product of its digits is 115736040, while the sum is 70.

The spelling of 1299371992576 in words is "one trillion, two hundred ninety-nine billion, three hundred seventy-one million, nine hundred ninety-two thousand, five hundred seventy-six".