87073599313 has 4 divisors (see below), whose sum is σ = 87075118260. Its totient is φ = 87072080368.

The previous prime is 87073599311. The next prime is 87073599359. The reversal of 87073599313 is 31399537078.

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 71346683664 + 15726915649 = 267108^2 + 125407^2 .

It is a cyclic number.

It is not a de Polignac number, because 87073599313 - 2¹ = 87073599311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87073599311) 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, 669970 + ... + 789307.

It is an arithmetic number, because the mean of its divisors is an integer number (21768779565).

Almost surely, 2^87073599313 is an apocalyptic number.

It is an amenable number.

87073599313 is a deficient number, since it is larger than the sum of its proper divisors (1518947).

87073599313 is a wasteful number, since it uses less digits than its factorization.

87073599313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518946.

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 87073599313 in words is "eighty-seven billion, seventy-three million, five hundred ninety-nine thousand, three hundred thirteen".