1275013889000 has 64 divisors (see below), whose sum is σ = 3159034454160. Its totient is φ = 480005222400.

The previous prime is 1275013888999. The next prime is 1275013889047. The reversal of 1275013889000 is 9883105721.

It can be written as a sum of positive squares in 8 ways, for example, as 143645548036 + 1131368340964 = 379006^2 + 1063658^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37483409 + ... + 37517408.

Almost surely, 2^{1275013889000} is an apocalyptic number.

1275013889000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275013889000 is an abundant number, since it is smaller than the sum of its proper divisors (1884020565160).

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

1275013889000 is a wasteful number, since it uses less digits than its factorization.

1275013889000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75000855 (or 75000841 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 1275013889000 in words is "one trillion, two hundred seventy-five billion, thirteen million, eight hundred eighty-nine thousand".