1247690376047 has 4 divisors (see below), whose sum is σ = 1247702612520. Its totient is φ = 1247678139576.

The previous prime is 1247690376043. The next prime is 1247690376143. The reversal of 1247690376047 is 7406730967421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1247690376047 - 2² = 1247690376043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1247690375983 and 1247690376001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247690376043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5963993 + ... + 6169650.

It is an arithmetic number, because the mean of its divisors is an integer number (311925653130).

Almost surely, 2^{1247690376047} is an apocalyptic number.

1247690376047 is a deficient number, since it is larger than the sum of its proper divisors (12236473).

1247690376047 is a wasteful number, since it uses less digits than its factorization.

1247690376047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236472.

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 1247690376047 in words is "one trillion, two hundred forty-seven billion, six hundred ninety million, three hundred seventy-six thousand, forty-seven".