1125758866651 has 4 divisors (see below), whose sum is σ = 1191979976472. Its totient is φ = 1059537756832.

The previous prime is 1125758866643. The next prime is 1125758866667. The reversal of 1125758866651 is 1566688575211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125758866651 - 2³ = 1125758866643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125758866651.

It is not an unprimeable number, because it can be changed into a prime (1125758866751) by changing a digit.

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, 33110554885 + ... + 33110554918.

It is an arithmetic number, because the mean of its divisors is an integer number (297994994118).

Almost surely, 2^{1125758866651} is an apocalyptic number.

1125758866651 is a deficient number, since it is larger than the sum of its proper divisors (66221109821).

1125758866651 is an equidigital number, since it uses as much as digits as its factorization.

1125758866651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66221109820.

The product of its digits is 24192000, while the sum is 61.

The spelling of 1125758866651 in words is "one trillion, one hundred twenty-five billion, seven hundred fifty-eight million, eight hundred sixty-six thousand, six hundred fifty-one".