21419813028 has 48 divisors (see below), whose sum is σ = 50210012160. Its totient is φ = 7107062304.

The previous prime is 21419813011. The next prime is 21419813059. The reversal of 21419813028 is 82031891412.

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 15 ways as a sum of consecutive naturals, for example, 6016713 + ... + 6020271.

It is an arithmetic number, because the mean of its divisors is an integer number (1046041920).

Almost surely, 2^21419813028 is an apocalyptic number.

It is an amenable number.

21419813028 is an abundant number, since it is smaller than the sum of its proper divisors (28790199132).

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

21419813028 is a wasteful number, since it uses less digits than its factorization.

21419813028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736 (or 5734 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 21419813028 in words is "twenty-one billion, four hundred nineteen million, eight hundred thirteen thousand, twenty-eight".