21380388714 has 48 divisors (see below), whose sum is σ = 48361465152. Its totient is φ = 6813664704.

The previous prime is 21380388703. The next prime is 21380388751. The reversal of 21380388714 is 41788308312.

It is a self number, because there is not a number n which added to its sum of digits gives 21380388714.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939717 + ... + 962199.

It is an arithmetic number, because the mean of its divisors is an integer number (1007530524).

Almost surely, 2^21380388714 is an apocalyptic number.

21380388714 is an abundant number, since it is smaller than the sum of its proper divisors (26981076438).

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

21380388714 is a wasteful number, since it uses less digits than its factorization.

21380388714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24811 (or 24808 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 21380388714 in words is "twenty-one billion, three hundred eighty million, three hundred eighty-eight thousand, seven hundred fourteen".