85305231898 has 64 divisors (see below), whose sum is σ = 138934517760. Its totient is φ = 39183198912.

The previous prime is 85305231877. The next prime is 85305231919. The reversal of 85305231898 is 89813250358.

It is an interprime number because it is at equal distance from previous prime (85305231877) and next prime (85305231919).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29546611 + ... + 29549497.

It is an arithmetic number, because the mean of its divisors is an integer number (2170851840).

Almost surely, 2^85305231898 is an apocalyptic number.

85305231898 is a deficient number, since it is larger than the sum of its proper divisors (53629285862).

85305231898 is a wasteful number, since it uses less digits than its factorization.

85305231898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 85305231898 in words is "eighty-five billion, three hundred five million, two hundred thirty-one thousand, eight hundred ninety-eight".