21414034818 has 48 divisors (see below), whose sum is σ = 50642426016. Its totient is φ = 6485584320.

The previous prime is 21414034781. The next prime is 21414034823. The reversal of 21414034818 is 81843041412.

It is a happy number.

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, 349230 + ... + 405942.

It is an arithmetic number, because the mean of its divisors is an integer number (1055050542).

Almost surely, 2^21414034818 is an apocalyptic number.

21414034818 is an abundant number, since it is smaller than the sum of its proper divisors (29228391198).

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

21414034818 is a wasteful number, since it uses less digits than its factorization.

21414034818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58639 (or 58636 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 21414034818 in words is "twenty-one billion, four hundred fourteen million, thirty-four thousand, eight hundred eighteen".