21163525414 has 8 divisors (see below), whose sum is σ = 31746330000. Its totient is φ = 10581415416.

The previous prime is 21163525393. The next prime is 21163525423. The reversal of 21163525414 is 41452536112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21163525414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89274 + ... + 224269.

It is an arithmetic number, because the mean of its divisors is an integer number (3968291250).

Almost surely, 2^21163525414 is an apocalyptic number.

21163525414 is a deficient number, since it is larger than the sum of its proper divisors (10582804586).

21163525414 is a wasteful number, since it uses less digits than its factorization.

21163525414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347294.

The product of its digits is 28800, while the sum is 34.

The spelling of 21163525414 in words is "twenty-one billion, one hundred sixty-three million, five hundred twenty-five thousand, four hundred fourteen".