1299429980802 has 30 divisors (see below), whose sum is σ = 2911718208729. Its totient is φ = 433138490640.

The previous prime is 1299429980773. The next prime is 1299429980809. The reversal of 1299429980802 is 2080899249921.

1299429980802 is a `hidden beast` number, since 129 + 9 + 429 + 9 + 8 + 0 + 80 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1183393689921 + 116036290881 = 1087839^2 + 340641^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=806049.

It is a super-3 number, since 3×1299429980802³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1299429980802.

It is not an unprimeable number, because it can be changed into a prime (1299429980809) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 14464102 + ... + 14553662.

Almost surely, 2^{1299429980802} is an apocalyptic number.

1299429980802 is an abundant number, since it is smaller than the sum of its proper divisors (1612288227927).

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

1299429980802 is an frugal number, since it uses more digits than its factorization.

1299429980802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179136 (or 89566 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 1299429980802 in words is "one trillion, two hundred ninety-nine billion, four hundred twenty-nine million, nine hundred eighty thousand, eight hundred two".