1275200561806 has 8 divisors (see below), whose sum is σ = 1912941872640. Its totient is φ = 637553270928.

The previous prime is 1275200561753. The next prime is 1275200561819. The reversal of 1275200561806 is 6081650025721.

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

It is a super-2 number, since 2×1275200561806² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23471071 + ... + 23525338.

It is an arithmetic number, because the mean of its divisors is an integer number (239117734080).

Almost surely, 2^{1275200561806} is an apocalyptic number.

1275200561806 is a deficient number, since it is larger than the sum of its proper divisors (637741310834).

1275200561806 is a wasteful number, since it uses less digits than its factorization.

1275200561806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47009978.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 1275200561806 in words is "one trillion, two hundred seventy-five billion, two hundred million, five hundred sixty-one thousand, eight hundred six".