21774374082 has 48 divisors (see below), whose sum is σ = 47593611000. Its totient is φ = 7194410496.

The previous prime is 21774374077. The next prime is 21774374093. The reversal of 21774374082 is 28047347712.

21774374082 is a `hidden beast` number, since 2 + 177 + 437 + 40 + 8 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15205109481 + 6569264601 = 123309^2 + 81051^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1039044 + ... + 1059792.

Almost surely, 2^21774374082 is an apocalyptic number.

21774374082 is an abundant number, since it is smaller than the sum of its proper divisors (25819236918).

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

21774374082 is a wasteful number, since it uses less digits than its factorization.

21774374082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21267 (or 21264 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 21774374082 in words is "twenty-one billion, seven hundred seventy-four million, three hundred seventy-four thousand, eighty-two".