1263875138750 has 40 divisors (see below), whose sum is σ = 2707437230256. Its totient is φ = 433328616000.

The previous prime is 1263875138711. The next prime is 1263875138761. The reversal of 1263875138750 is 578315783621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72212687 + ... + 72230186.

Almost surely, 2^{1263875138750} is an apocalyptic number.

1263875138750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263875138750 is an abundant number, since it is smaller than the sum of its proper divisors (1443562091506).

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

1263875138750 is an equidigital number, since it uses as much as digits as its factorization.

1263875138750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144442902 (or 144442887 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 1263875138750 in words is "one trillion, two hundred sixty-three billion, eight hundred seventy-five million, one hundred thirty-eight thousand, seven hundred fifty".