21917521134614 has 96 divisors (see below), whose sum is σ = 39654766964736. Its totient is φ = 9049467752640.

The previous prime is 21917521134611. The next prime is 21917521134673. The reversal of 21917521134614 is 41643112571912.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21917521134611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 860746847 + ... + 860772309.

It is an arithmetic number, because the mean of its divisors is an integer number (413070489216).

Almost surely, 2^{21917521134614} is an apocalyptic number.

21917521134614 is a deficient number, since it is larger than the sum of its proper divisors (17737245830122).

21917521134614 is a wasteful number, since it uses less digits than its factorization.

21917521134614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26770 (or 26763 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The spelling of 21917521134614 in words is "twenty-one trillion, nine hundred seventeen billion, five hundred twenty-one million, one hundred thirty-four thousand, six hundred fourteen".