1247485135975 has 48 divisors (see below), whose sum is σ = 1672836931584. Its totient is φ = 917374320000.

The previous prime is 1247485135931. The next prime is 1247485136003. The reversal of 1247485135975 is 5795315847421.

It is a happy number.

It is not a de Polignac number, because 1247485135975 - 2²³ = 1247476747367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116331964 + ... + 116342686.

It is an arithmetic number, because the mean of its divisors is an integer number (34850769408).

Almost surely, 2^{1247485135975} is an apocalyptic number.

1247485135975 is a deficient number, since it is larger than the sum of its proper divisors (425351795609).

1247485135975 is a wasteful number, since it uses less digits than its factorization.

1247485135975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12208 (or 12203 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 61.

The spelling of 1247485135975 in words is "one trillion, two hundred forty-seven billion, four hundred eighty-five million, one hundred thirty-five thousand, nine hundred seventy-five".