21204767614 has 32 divisors (see below), whose sum is σ = 34021995840. Its totient is φ = 9887539200.

The previous prime is 21204767569. The next prime is 21204767621. The reversal of 21204767614 is 41676740212.

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, 4012654 + ... + 4017934.

It is an arithmetic number, because the mean of its divisors is an integer number (1063187370).

Almost surely, 2^21204767614 is an apocalyptic number.

21204767614 is a deficient number, since it is larger than the sum of its proper divisors (12817228226).

21204767614 is a wasteful number, since it uses less digits than its factorization.

21204767614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 21204767614 in words is "twenty-one billion, two hundred four million, seven hundred sixty-seven thousand, six hundred fourteen".