21418717014 has 24 divisors (see below), whose sum is σ = 47486459592. Its totient is φ = 6973535520.

The previous prime is 21418717013. The next prime is 21418717037. The reversal of 21418717014 is 41071781412.

It is a super-2 number, since 2×21418717014² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21418717014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21418717013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13835607 + ... + 13837154.

It is an arithmetic number, because the mean of its divisors is an integer number (1978602483).

Almost surely, 2^21418717014 is an apocalyptic number.

21418717014 is an abundant number, since it is smaller than the sum of its proper divisors (26067742578).

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

21418717014 is a wasteful number, since it uses less digits than its factorization.

21418717014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27672812 (or 27672809 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The spelling of 21418717014 in words is "twenty-one billion, four hundred eighteen million, seven hundred seventeen thousand, fourteen".