87540173259 has 32 divisors (see below), whose sum is σ = 145606447104. Its totient is φ = 45448814880.

The previous prime is 87540173249. The next prime is 87540173263. The reversal of 87540173259 is 95237104578.

It is not a de Polignac number, because 87540173259 - 2⁷ = 87540173131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87540173249) 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 in 31 ways as a sum of consecutive naturals, for example, 288042 + ... + 507984.

It is an arithmetic number, because the mean of its divisors is an integer number (4550201472).

Almost surely, 2^87540173259 is an apocalyptic number.

87540173259 is a deficient number, since it is larger than the sum of its proper divisors (58066273845).

87540173259 is a wasteful number, since it uses less digits than its factorization.

87540173259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221687.

The product of its (nonzero) digits is 2116800, while the sum is 51.

The spelling of 87540173259 in words is "eighty-seven billion, five hundred forty million, one hundred seventy-three thousand, two hundred fifty-nine".