21734077734342 has 24 divisors (see below), whose sum is σ = 47091775195920. Its totient is φ = 7244496664560.

The previous prime is 21734077734269. The next prime is 21734077734349. The reversal of 21734077734342 is 24343777043712.

It is a happy number.

21734077734342 is a `hidden beast` number, since 2 + 1 + 73 + 4 + 0 + 77 + 73 + 434 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21734077734349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15641242 + ... + 16973997.

It is an arithmetic number, because the mean of its divisors is an integer number (1962157299830).

Almost surely, 2^{21734077734342} is an apocalyptic number.

21734077734342 is an abundant number, since it is smaller than the sum of its proper divisors (25357697461578).

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

21734077734342 is a wasteful number, since it uses less digits than its factorization.

21734077734342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32652268 (or 32652265 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 54.

The spelling of 21734077734342 in words is "twenty-one trillion, seven hundred thirty-four billion, seventy-seven million, seven hundred thirty-four thousand, three hundred forty-two".