21330886846 has 16 divisors (see below), whose sum is σ = 32453209440. Its totient is φ = 10513208160.

The previous prime is 21330886747. The next prime is 21330886847. The reversal of 21330886846 is 64868803312.

It is a self number, because there is not a number n which added to its sum of digits gives 21330886846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330886847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958720 + ... + 980716.

It is an arithmetic number, because the mean of its divisors is an integer number (2028325590).

Almost surely, 2^21330886846 is an apocalyptic number.

21330886846 is a deficient number, since it is larger than the sum of its proper divisors (11122322594).

21330886846 is a wasteful number, since it uses less digits than its factorization.

21330886846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28899.

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 21330886846 in words is "twenty-one billion, three hundred thirty million, eight hundred eighty-six thousand, eight hundred forty-six".