21140116640604 has 36 divisors (see below), whose sum is σ = 57548095300696. Its totient is φ = 6504651273888.

The previous prime is 21140116640543. The next prime is 21140116640611. The reversal of 21140116640604 is 40604661104112.

21140116640604 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 0 + 1 + 1 + 6 + 6 + 40 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22585594234 + ... + 22585595169.

Almost surely, 2^{21140116640604} is an apocalyptic number.

It is an amenable number.

21140116640604 is an abundant number, since it is smaller than the sum of its proper divisors (36407978660092).

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

21140116640604 is a wasteful number, since it uses less digits than its factorization.

21140116640604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45171189426 (or 45171189421 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Adding to 21140116640604 its reverse (40604661104112), we get a palindrome (61744777744716).

The spelling of 21140116640604 in words is "twenty-one trillion, one hundred forty billion, one hundred sixteen million, six hundred forty thousand, six hundred four".