1263751263875 has 32 divisors (see below), whose sum is σ = 1646304791040. Its totient is φ = 966708943200.

The previous prime is 1263751263821. The next prime is 1263751263917. The reversal of 1263751263875 is 5783621573621.

It is not a de Polignac number, because 1263751263875 - 2³⁸ = 988873356931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1263751263875.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8374844 + ... + 8524406.

It is an arithmetic number, because the mean of its divisors is an integer number (51447024720).

Almost surely, 2^{1263751263875} is an apocalyptic number.

1263751263875 is a deficient number, since it is larger than the sum of its proper divisors (382553527165).

1263751263875 is a wasteful number, since it uses less digits than its factorization.

1263751263875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152540 (or 152530 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 56.

The spelling of 1263751263875 in words is "one trillion, two hundred sixty-three billion, seven hundred fifty-one million, two hundred sixty-three thousand, eight hundred seventy-five".