98121719966 has 4 divisors (see below), whose sum is σ = 147182579952. Its totient is φ = 49060859982.

The previous prime is 98121719959. The next prime is 98121719981. The reversal of 98121719966 is 66991712189.

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

It is a super-2 number, since 2×98121719966² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24530429990 + ... + 24530429993.

It is an arithmetic number, because the mean of its divisors is an integer number (36795644988).

Almost surely, 2^98121719966 is an apocalyptic number.

98121719966 is a deficient number, since it is larger than the sum of its proper divisors (49060859986).

98121719966 is a wasteful number, since it uses less digits than its factorization.

98121719966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49060859985.

The product of its digits is 2939328, while the sum is 59.

The spelling of 98121719966 in words is "ninety-eight billion, one hundred twenty-one million, seven hundred nineteen thousand, nine hundred sixty-six".