1275275013890 has 8 divisors (see below), whose sum is σ = 2295495025020. Its totient is φ = 510110005552.

The previous prime is 1275275013869. The next prime is 1275275013907. The reversal of 1275275013890 is 983105725721.

It can be written as a sum of positive squares in 2 ways, for example, as 1246418177761 + 28856836129 = 1116431^2 + 169873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1275275013890² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63763750685 + ... + 63763750704.

Almost surely, 2^{1275275013890} is an apocalyptic number.

1275275013890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275275013890 is a deficient number, since it is larger than the sum of its proper divisors (1020220011130).

1275275013890 is a wasteful number, since it uses less digits than its factorization.

1275275013890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127527501396.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 1275275013890 in words is "one trillion, two hundred seventy-five billion, two hundred seventy-five million, thirteen thousand, eight hundred ninety".