21707687564342 has 8 divisors (see below), whose sum is σ = 35066264527056. Its totient is φ = 10018932721992.

The previous prime is 21707687564281. The next prime is 21707687564369. The reversal of 21707687564342 is 24346578670712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 417455530058 + ... + 417455530109.

It is an arithmetic number, because the mean of its divisors is an integer number (4383283065882).

Almost surely, 2^{21707687564342} is an apocalyptic number.

21707687564342 is a deficient number, since it is larger than the sum of its proper divisors (13358576962714).

21707687564342 is a wasteful number, since it uses less digits than its factorization.

21707687564342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834911060182.

The product of its (nonzero) digits is 94832640, while the sum is 62.

The spelling of 21707687564342 in words is "twenty-one trillion, seven hundred seven billion, six hundred eighty-seven million, five hundred sixty-four thousand, three hundred forty-two".