1247510972444 has 12 divisors (see below), whose sum is σ = 2381611856568. Its totient is φ = 567050442000.

The previous prime is 1247510972401. The next prime is 1247510972473. The reversal of 1247510972444 is 4442790157421.

It is a junction number, because it is equal to n+sod(n) for n = 1247510972392 and 1247510972401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14176261007 + ... + 14176261094.

It is an arithmetic number, because the mean of its divisors is an integer number (198467654714).

Almost surely, 2^{1247510972444} is an apocalyptic number.

It is an amenable number.

1247510972444 is a deficient number, since it is larger than the sum of its proper divisors (1134100884124).

1247510972444 is a wasteful number, since it uses less digits than its factorization.

1247510972444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28352522116 (or 28352522114 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 1247510972444 in words is "one trillion, two hundred forty-seven billion, five hundred ten million, nine hundred seventy-two thousand, four hundred forty-four".