21224641614 has 16 divisors (see below), whose sum is σ = 46308309120. Its totient is φ = 6431709560.

The previous prime is 21224641583. The next prime is 21224641621. The reversal of 21224641614 is 41614642212.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160792674 + ... + 160792805.

It is an arithmetic number, because the mean of its divisors is an integer number (2894269320).

Almost surely, 2^21224641614 is an apocalyptic number.

21224641614 is an abundant number, since it is smaller than the sum of its proper divisors (25083667506).

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

21224641614 is a wasteful number, since it uses less digits than its factorization.

21224641614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321585495.

The product of its digits is 18432, while the sum is 33.

The spelling of 21224641614 in words is "twenty-one billion, two hundred twenty-four million, six hundred forty-one thousand, six hundred fourteen".