80984819421 has 24 divisors (see below), whose sum is σ = 127833698304. Its totient is φ = 48996610560.

The previous prime is 80984819401. The next prime is 80984819431. The reversal of 80984819421 is 12491848908.

It is a happy number.

80984819421 is a `hidden beast` number, since 80 + 98 + 48 + 19 + 421 = 666.

It is not a de Polignac number, because 80984819421 - 2¹¹ = 80984817373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80984819401) 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 23 ways as a sum of consecutive naturals, for example, 651741 + ... + 765986.

It is an arithmetic number, because the mean of its divisors is an integer number (5326404096).

Almost surely, 2^80984819421 is an apocalyptic number.

It is an amenable number.

80984819421 is a deficient number, since it is larger than the sum of its proper divisors (46848878883).

80984819421 is a wasteful number, since it uses less digits than its factorization.

80984819421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418321 (or 1418318 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The spelling of 80984819421 in words is "eighty billion, nine hundred eighty-four million, eight hundred nineteen thousand, four hundred twenty-one".