21083570108678 has 32 divisors (see below), whose sum is σ = 39969137733120. Its totient is φ = 8101852234560.

The previous prime is 21083570108669. The next prime is 21083570108683. The reversal of 21083570108678 is 87680107538012.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 937703138 + ... + 937725621.

It is an arithmetic number, because the mean of its divisors is an integer number (1249035554160).

Almost surely, 2^{21083570108678} is an apocalyptic number.

21083570108678 is a deficient number, since it is larger than the sum of its proper divisors (18885567624442).

21083570108678 is a wasteful number, since it uses less digits than its factorization.

21083570108678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875428852.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The spelling of 21083570108678 in words is "twenty-one trillion, eighty-three billion, five hundred seventy million, one hundred eight thousand, six hundred seventy-eight".