87198249844258 has 16 divisors (see below), whose sum is σ = 149525879771520. Its totient is φ = 37359887066496.

The previous prime is 87198249844243. The next prime is 87198249844289. The reversal of 87198249844258 is 85244894289178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899236303 + ... + 899333266.

It is an arithmetic number, because the mean of its divisors is an integer number (9345367485720).

Almost surely, 2^{87198249844258} is an apocalyptic number.

87198249844258 is a deficient number, since it is larger than the sum of its proper divisors (62327629927262).

87198249844258 is a wasteful number, since it uses less digits than its factorization.

87198249844258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798573041.

The product of its digits is 2972712960, while the sum is 79.

The spelling of 87198249844258 in words is "eighty-seven trillion, one hundred ninety-eight billion, two hundred forty-nine million, eight hundred forty-four thousand, two hundred fifty-eight".