1299247342780 has 48 divisors (see below), whose sum is σ = 2799497254176. Its totient is φ = 506201400320.

The previous prime is 1299247342751. The next prime is 1299247342793. The reversal of 1299247342780 is 872437429921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778054 + ... + 1789933.

It is an arithmetic number, because the mean of its divisors is an integer number (58322859462).

Almost surely, 2^{1299247342780} is an apocalyptic number.

1299247342780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1299247342780 is an abundant number, since it is smaller than the sum of its proper divisors (1500249911396).

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

1299247342780 is a wasteful number, since it uses less digits than its factorization.

1299247342780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568654 (or 2568652 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 1299247342780 in words is "one trillion, two hundred ninety-nine billion, two hundred forty-seven million, three hundred forty-two thousand, seven hundred eighty".