1299453607681 has 8 divisors (see below), whose sum is σ = 1308325175744. Its totient is φ = 1290585538800.

The previous prime is 1299453607657. The next prime is 1299453607693. The reversal of 1299453607681 is 1867063549921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1299453607681 - 2⁵ = 1299453607649 is a prime.

It is a super-2 number, since 2×1299453607681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299453607481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127371 + ... + 1617136.

It is an arithmetic number, because the mean of its divisors is an integer number (163540646968).

It is a 1-persistent number, because it is pandigital, but 2⋅1299453607681 = 2598907215362 is not.

Almost surely, 2^{1299453607681} is an apocalyptic number.

It is an amenable number.

1299453607681 is a deficient number, since it is larger than the sum of its proper divisors (8871568063).

1299453607681 is a wasteful number, since it uses less digits than its factorization.

1299453607681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749591.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 1299453607681 in words is "one trillion, two hundred ninety-nine billion, four hundred fifty-three million, six hundred seven thousand, six hundred eighty-one".