98105981785 has 48 divisors (see below), whose sum is σ = 143340019200. Its totient is φ = 63131765760.

The previous prime is 98105981749. The next prime is 98105981791. The reversal of 98105981785 is 58718950189.

It is not a de Polignac number, because 98105981785 - 2⁹ = 98105981273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3516240 + ... + 3544030.

It is an arithmetic number, because the mean of its divisors is an integer number (2986250400).

Almost surely, 2^98105981785 is an apocalyptic number.

It is an amenable number.

98105981785 is a deficient number, since it is larger than the sum of its proper divisors (45234037415).

98105981785 is a wasteful number, since it uses less digits than its factorization.

98105981785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28186 (or 28169 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 61.

The spelling of 98105981785 in words is "ninety-eight billion, one hundred five million, nine hundred eighty-one thousand, seven hundred eighty-five".