98701188991 has 4 divisors (see below), whose sum is σ = 98743173984. Its totient is φ = 98659204000.

The previous prime is 98701188977. The next prime is 98701188997. The reversal of 98701188991 is 19988110789.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98701188991 - 2¹⁵ = 98701156223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98701188997) 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, 20988970 + ... + 20993671.

It is an arithmetic number, because the mean of its divisors is an integer number (24685793496).

Almost surely, 2^98701188991 is an apocalyptic number.

98701188991 is a deficient number, since it is larger than the sum of its proper divisors (41984993).

98701188991 is a wasteful number, since it uses less digits than its factorization.

98701188991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41984992.

The product of its (nonzero) digits is 2612736, while the sum is 61.

The spelling of 98701188991 in words is "ninety-eight billion, seven hundred one million, one hundred eighty-eight thousand, nine hundred ninety-one".