98392919181721 has 8 divisors (see below), whose sum is σ = 99867440714720. Its totient is φ = 96918573251808.

The previous prime is 98392919181617. The next prime is 98392919181727. The reversal of 98392919181721 is 12718191929389.

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 98392919181721 - 2¹³ = 98392919173529 is a prime.

It is the 9919321-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98392919181727) by changing a digit.

It is a nontrivial repunit in base 9919320.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42771531 + ... + 45013216.

It is an arithmetic number, because the mean of its divisors is an integer number (12483430089340).

Almost surely, 2^{98392919181721} is an apocalyptic number.

It is an amenable number.

98392919181721 is a deficient number, since it is larger than the sum of its proper divisors (1474521532999).

98392919181721 is a wasteful number, since it uses less digits than its factorization.

98392919181721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87801543.

The product of its digits is 35271936, while the sum is 70.

The spelling of 98392919181721 in words is "ninety-eight trillion, three hundred ninety-two billion, nine hundred nineteen million, one hundred eighty-one thousand, seven hundred twenty-one".