21027085354 has 16 divisors (see below), whose sum is σ = 34794567360. Its totient is φ = 9450374560.

The previous prime is 21027085351. The next prime is 21027085367. The reversal of 21027085354 is 45358072012.

21027085354 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (21027085351) 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 7 ways as a sum of consecutive naturals, for example, 5367574 + ... + 5371489.

It is an arithmetic number, because the mean of its divisors is an integer number (2174660460).

Almost surely, 2^21027085354 is an apocalyptic number.

21027085354 is a deficient number, since it is larger than the sum of its proper divisors (13767482006).

21027085354 is a wasteful number, since it uses less digits than its factorization.

21027085354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10739165.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 21027085354 in words is "twenty-one billion, twenty-seven million, eighty-five thousand, three hundred fifty-four".