21435671560342 has 64 divisors (see below), whose sum is σ = 37145120382720. Its totient is φ = 9193839168384.

The previous prime is 21435671560307. The next prime is 21435671560351. The reversal of 21435671560342 is 24306517653412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123570913 + ... + 123744259.

It is an arithmetic number, because the mean of its divisors is an integer number (580392505980).

Almost surely, 2^{21435671560342} is an apocalyptic number.

21435671560342 is a deficient number, since it is larger than the sum of its proper divisors (15709448822378).

21435671560342 is a wasteful number, since it uses less digits than its factorization.

21435671560342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178157.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 21435671560342 in words is "twenty-one trillion, four hundred thirty-five billion, six hundred seventy-one million, five hundred sixty thousand, three hundred forty-two".