73254778885 has 4 divisors (see below), whose sum is σ = 87905734668. Its totient is φ = 58603823104.

The previous prime is 73254778837. The next prime is 73254778913. The reversal of 73254778885 is 58887745237.

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 53824928004 + 19429850881 = 232002^2 + 139391^2 .

It is a cyclic number.

It is not a de Polignac number, because 73254778885 - 2²³ = 73246390277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7325477884 + ... + 7325477893.

It is an arithmetic number, because the mean of its divisors is an integer number (21976433667).

Almost surely, 2^73254778885 is an apocalyptic number.

It is an amenable number.

73254778885 is a deficient number, since it is larger than the sum of its proper divisors (14650955783).

73254778885 is a wasteful number, since it uses less digits than its factorization.

73254778885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14650955782.

The product of its digits is 105369600, while the sum is 64.

The spelling of 73254778885 in words is "seventy-three billion, two hundred fifty-four million, seven hundred seventy-eight thousand, eight hundred eighty-five".