21767546084 has 12 divisors (see below), whose sum is σ = 38114114304. Its totient is φ = 10877799144.

The previous prime is 21767546071. The next prime is 21767546149. The reversal of 21767546084 is 48064576712.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485272 + ... + 1499855.

It is an arithmetic number, because the mean of its divisors is an integer number (3176176192).

Almost surely, 2^21767546084 is an apocalyptic number.

It is an amenable number.

21767546084 is a deficient number, since it is larger than the sum of its proper divisors (16346568220).

21767546084 is a wasteful number, since it uses less digits than its factorization.

21767546084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986954 (or 2986952 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 21767546084 in words is "twenty-one billion, seven hundred sixty-seven million, five hundred forty-six thousand, eighty-four".