21067552074 has 16 divisors (see below), whose sum is σ = 43494301440. Its totient is φ = 6795984480.

The previous prime is 21067552069. The next prime is 21067552081. The reversal of 21067552074 is 47025576012.

It is an unprimeable number.

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, 56633019 + ... + 56633390.

It is an arithmetic number, because the mean of its divisors is an integer number (2718393840).

Almost surely, 2^21067552074 is an apocalyptic number.

21067552074 is an abundant number, since it is smaller than the sum of its proper divisors (22426749366).

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

21067552074 is a wasteful number, since it uses less digits than its factorization.

21067552074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113266445.

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 21067552074 in words is "twenty-one billion, sixty-seven million, five hundred fifty-two thousand, seventy-four".