21398586873084 has 288 divisors, whose sum is σ = 58179238301184. Its totient is φ = 6615251596800.

The previous prime is 21398586873047. The next prime is 21398586873119. The reversal of 21398586873084 is 48037868589312.

21398586873084 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 8 + 586 + 8 + 7 + 30 + 8 + 4 = 666.

It is a super-3 number, since 3×21398586873084³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6482454234 + ... + 6482457534.

It is a 1-persistent number, because it is pandigital, but 2⋅21398586873084 = 42797173746168 is not.

Almost surely, 2^{21398586873084} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21398586873084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29089619150592).

21398586873084 is an abundant number, since it is smaller than the sum of its proper divisors (36780651428100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21398586873084 is a wasteful number, since it uses less digits than its factorization.

21398586873084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657 (or 4652 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 72.

The spelling of 21398586873084 in words is "twenty-one trillion, three hundred ninety-eight billion, five hundred eighty-six million, eight hundred seventy-three thousand, eighty-four".