1247112694564 has 81 divisors (see below), whose sum is σ = 2508859285051. Its totient is φ = 541977227440.

The previous prime is 1247112694519. The next prime is 1247112694613. The reversal of 1247112694564 is 4654962117421.

The square root of 1247112694564 is 1116742.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 565070349 + ... + 565072555.

Almost surely, 2^{1247112694564} is an apocalyptic number.

1247112694564 is the 1116742-nd square number.

It is an amenable number.

1247112694564 is an abundant number, since it is smaller than the sum of its proper divisors (1261746590487).

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

1247112694564 is an equidigital number, since it uses as much as digits as its factorization.

1247112694564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486 (or 2243 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The spelling of 1247112694564 in words is "one trillion, two hundred forty-seven billion, one hundred twelve million, six hundred ninety-four thousand, five hundred sixty-four".