21774365522 has 96 divisors (see below), whose sum is σ = 42683606784. Its totient is φ = 8111145600.

The previous prime is 21774365461. The next prime is 21774365549. The reversal of 21774365522 is 22556347712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11891147 + ... + 11892977.

It is an arithmetic number, because the mean of its divisors is an integer number (444620904).

Almost surely, 2^21774365522 is an apocalyptic number.

21774365522 is a deficient number, since it is larger than the sum of its proper divisors (20909241262).

21774365522 is a wasteful number, since it uses less digits than its factorization.

21774365522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072 (or 2053 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The spelling of 21774365522 in words is "twenty-one billion, seven hundred seventy-four million, three hundred sixty-five thousand, five hundred twenty-two".