1247992314549 has 8 divisors (see below), whose sum is σ = 1692192969120. Its totient is φ = 817893268176.

The previous prime is 1247992314493. The next prime is 1247992314577. The reversal of 1247992314549 is 9454132997421.

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

It is a de Polignac number, because none of the positive numbers 2^k-1247992314549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1247992314492 and 1247992314501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247992314599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3525401842 + ... + 3525402195.

It is an arithmetic number, because the mean of its divisors is an integer number (211524121140).

Almost surely, 2^{1247992314549} is an apocalyptic number.

It is an amenable number.

1247992314549 is a deficient number, since it is larger than the sum of its proper divisors (444200654571).

1247992314549 is an equidigital number, since it uses as much as digits as its factorization.

1247992314549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050804099.

The product of its digits is 19595520, while the sum is 60.

The spelling of 1247992314549 in words is "one trillion, two hundred forty-seven billion, nine hundred ninety-two million, three hundred fourteen thousand, five hundred forty-nine".