21893616348 has 24 divisors (see below), whose sum is σ = 51113741952. Its totient is φ = 7293781104.

The previous prime is 21893616299. The next prime is 21893616373. The reversal of 21893616348 is 84361639812.

It is a self number, because there is not a number n which added to its sum of digits gives 21893616348.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489040 + ... + 531927.

It is an arithmetic number, because the mean of its divisors is an integer number (2129739248).

Almost surely, 2^21893616348 is an apocalyptic number.

It is an amenable number.

21893616348 is an abundant number, since it is smaller than the sum of its proper divisors (29220125604).

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

21893616348 is a wasteful number, since it uses less digits than its factorization.

21893616348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022761 (or 1022759 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The spelling of 21893616348 in words is "twenty-one billion, eight hundred ninety-three million, six hundred sixteen thousand, three hundred forty-eight".