1299814530840 has 768 divisors, whose sum is σ = 5152424256000. Its totient is φ = 290533340160.

The previous prime is 1299814530809. The next prime is 1299814530841. The reversal of 1299814530840 is 480354189921.

It is a happy number.

1299814530840 is a `hidden beast` number, since 1 + 2 + 9 + 98 + 14 + 530 + 8 + 4 + 0 = 666.

It is a super-2 number, since 2×1299814530840² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299814530841) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 658800094 + ... + 658802066.

It is an arithmetic number, because the mean of its divisors is an integer number (6708885750).

Almost surely, 2^{1299814530840} is an apocalyptic number.

1299814530840 is a gapful number since it is divisible by the number (10) 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 1299814530840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2576212128000).

1299814530840 is an abundant number, since it is smaller than the sum of its proper divisors (3852609725160).

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

1299814530840 is a wasteful number, since it uses less digits than its factorization.

1299814530840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 1299814530840 in words is "one trillion, two hundred ninety-nine billion, eight hundred fourteen million, five hundred thirty thousand, eight hundred forty".