21403982814 has 32 divisors (see below), whose sum is σ = 44234736000. Its totient is φ = 6899232672.

The previous prime is 21403982797. The next prime is 21403982843. The reversal of 21403982814 is 41828930412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259564 + ... + 331935.

It is an arithmetic number, because the mean of its divisors is an integer number (1382335500).

Almost surely, 2^21403982814 is an apocalyptic number.

21403982814 is an abundant number, since it is smaller than the sum of its proper divisors (22830753186).

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

21403982814 is a wasteful number, since it uses less digits than its factorization.

21403982814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591704.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 21403982814 in words is "twenty-one billion, four hundred three million, nine hundred eighty-two thousand, eight hundred fourteen".