1247659542353 has 8 divisors (see below), whose sum is σ = 1425921112320. Its totient is φ = 1069404095520.

The previous prime is 1247659542257. The next prime is 1247659542359. The reversal of 1247659542353 is 3532459567421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1247659542353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247659542359) 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, 1085513 + ... + 1916678.

It is an arithmetic number, because the mean of its divisors is an integer number (178240139040).

Almost surely, 2^{1247659542353} is an apocalyptic number.

It is an amenable number.

1247659542353 is a deficient number, since it is larger than the sum of its proper divisors (178261569967).

1247659542353 is an equidigital number, since it uses as much as digits as its factorization.

1247659542353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061567.

The product of its digits is 27216000, while the sum is 56.

The spelling of 1247659542353 in words is "one trillion, two hundred forty-seven billion, six hundred fifty-nine million, five hundred forty-two thousand, three hundred fifty-three".