21724114506 has 32 divisors (see below), whose sum is σ = 43799132160. Its totient is φ = 7183068336.

The previous prime is 21724114483. The next prime is 21724114549. The reversal of 21724114506 is 60541142712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465715 + ... + 510233.

It is an arithmetic number, because the mean of its divisors is an integer number (1368722880).

Almost surely, 2^21724114506 is an apocalyptic number.

21724114506 is an abundant number, since it is smaller than the sum of its proper divisors (22075017654).

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

21724114506 is a wasteful number, since it uses less digits than its factorization.

21724114506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45178.

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 21724114506 in words is "twenty-one billion, seven hundred twenty-four million, one hundred fourteen thousand, five hundred six".