21116400163598 has 8 divisors (see below), whose sum is σ = 33537812024592. Its totient is φ = 9937129488736.

The previous prime is 21116400163577. The next prime is 21116400163613. The reversal of 21116400163598 is 89536100461112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310535296490 + ... + 310535296557.

It is an arithmetic number, because the mean of its divisors is an integer number (4192226503074).

Almost surely, 2^{21116400163598} is an apocalyptic number.

21116400163598 is a deficient number, since it is larger than the sum of its proper divisors (12421411860994).

21116400163598 is a wasteful number, since it uses less digits than its factorization.

21116400163598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621070593066.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 21116400163598 in words is "twenty-one trillion, one hundred sixteen billion, four hundred million, one hundred sixty-three thousand, five hundred ninety-eight".