99980493871 has 8 divisors (see below), whose sum is σ = 102949719264. Its totient is φ = 97036538880.

The previous prime is 99980493817. The next prime is 99980493881. The reversal of 99980493871 is 17839408999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99980493871 - 2¹¹ = 99980491823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99980493797 and 99980493806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99980493881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6309571 + ... + 6325396.

It is an arithmetic number, because the mean of its divisors is an integer number (12868714908).

Almost surely, 2^99980493871 is an apocalyptic number.

99980493871 is a deficient number, since it is larger than the sum of its proper divisors (2969225393).

99980493871 is a wasteful number, since it uses less digits than its factorization.

99980493871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12635201.

The product of its (nonzero) digits is 35271936, while the sum is 67.

The spelling of 99980493871 in words is "ninety-nine billion, nine hundred eighty million, four hundred ninety-three thousand, eight hundred seventy-one".