72776055826 has 4 divisors (see below), whose sum is σ = 109164083742. Its totient is φ = 36388027912.

The previous prime is 72776055761. The next prime is 72776055829. The reversal of 72776055826 is 62855067727.

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

It can be written as a sum of positive squares in only one way, i.e., 69195828601 + 3580227225 = 263051^2 + 59835^2 .

It is not an unprimeable number, because it can be changed into a prime (72776055829) by changing a digit.

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 as a sum of consecutive naturals, namely, 18194013955 + ... + 18194013958.

Almost surely, 2^72776055826 is an apocalyptic number.

72776055826 is a deficient number, since it is larger than the sum of its proper divisors (36388027916).

72776055826 is a wasteful number, since it uses less digits than its factorization.

72776055826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36388027915.

The product of its (nonzero) digits is 9878400, while the sum is 55.

The spelling of 72776055826 in words is "seventy-two billion, seven hundred seventy-six million, fifty-five thousand, eight hundred twenty-six".