998797380841 has 32 divisors (see below), whose sum is σ = 1106460988416. Its totient is φ = 895829760000.

The previous prime is 998797380727. The next prime is 998797380877. The reversal of 998797380841 is 148083797899.

It is a 4-Lehmer number, since φ(998797380841) divides (998797380841-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998797380841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998797380941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297171001 + ... + 297174361.

It is an arithmetic number, because the mean of its divisors is an integer number (34576905888).

It is a Poulet number, since it divides 2^998797380840-1.

Almost surely, 2^998797380841 is an apocalyptic number.

It is an amenable number.

998797380841 is a deficient number, since it is larger than the sum of its proper divisors (107663607575).

998797380841 is a wasteful number, since it uses less digits than its factorization.

998797380841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6793.

The product of its (nonzero) digits is 219469824, while the sum is 73.

The spelling of 998797380841 in words is "nine hundred ninety-eight billion, seven hundred ninety-seven million, three hundred eighty thousand, eight hundred forty-one".