1275150027765 has 32 divisors (see below), whose sum is σ = 2165030000640. Its totient is φ = 639485692736.

The previous prime is 1275150027761. The next prime is 1275150027779. The reversal of 1275150027765 is 5677200515721.

It is a cyclic number.

It is not a de Polignac number, because 1275150027765 - 2² = 1275150027761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275150027761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31302417 + ... + 31343126.

It is an arithmetic number, because the mean of its divisors is an integer number (67657187520).

Almost surely, 2^{1275150027765} is an apocalyptic number.

1275150027765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275150027765 is a deficient number, since it is larger than the sum of its proper divisors (889879972875).

1275150027765 is a wasteful number, since it uses less digits than its factorization.

1275150027765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62645633.

The product of its (nonzero) digits is 1029000, while the sum is 48.

The spelling of 1275150027765 in words is "one trillion, two hundred seventy-five billion, one hundred fifty million, twenty-seven thousand, seven hundred sixty-five".