85144000723277 has 4 divisors (see below), whose sum is σ = 90152471354076. Its totient is φ = 80135530092480.

The previous prime is 85144000723247. The next prime is 85144000723279. The reversal of 85144000723277 is 77232700044158.

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 75891033710116 + 9252967013161 = 8711546^2 + 3041869^2 .

It is a cyclic number.

It is not a de Polignac number, because 85144000723277 - 2⁸ = 85144000723021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85144000723279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504235315374 + ... + 2504235315407.

It is an arithmetic number, because the mean of its divisors is an integer number (22538117838519).

Almost surely, 2^{85144000723277} is an apocalyptic number.

It is an amenable number.

85144000723277 is a deficient number, since it is larger than the sum of its proper divisors (5008470630799).

85144000723277 is a wasteful number, since it uses less digits than its factorization.

85144000723277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008470630798.

The product of its (nonzero) digits is 2634240, while the sum is 50.

The spelling of 85144000723277 in words is "eighty-five trillion, one hundred forty-four billion, seven hundred twenty-three thousand, two hundred seventy-seven".