76221775873 has 4 divisors (see below), whose sum is σ = 76247590468. Its totient is φ = 76195961280.

The previous prime is 76221775837. The next prime is 76221775879. The reversal of 76221775873 is 37857712267.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35990642944 + 40231132929 = 189712^2 + 200577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76221775873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76221775879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12902868 + ... + 12908773.

It is an arithmetic number, because the mean of its divisors is an integer number (19061897617).

Almost surely, 2^76221775873 is an apocalyptic number.

It is an amenable number.

76221775873 is a deficient number, since it is larger than the sum of its proper divisors (25814595).

76221775873 is a wasteful number, since it uses less digits than its factorization.

76221775873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25814594.

The product of its digits is 6914880, while the sum is 55.

The spelling of 76221775873 in words is "seventy-six billion, two hundred twenty-one million, seven hundred seventy-five thousand, eight hundred seventy-three".