21244552414 has 16 divisors (see below), whose sum is σ = 31935768480. Its totient is φ = 10599321600.

The previous prime is 21244552387. The next prime is 21244552421. The reversal of 21244552414 is 41425544212.

It is a self number, because there is not a number n which added to its sum of digits gives 21244552414.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998714 + ... + 2009314.

It is an arithmetic number, because the mean of its divisors is an integer number (1995985530).

Almost surely, 2^21244552414 is an apocalyptic number.

21244552414 is a deficient number, since it is larger than the sum of its proper divisors (10691216066).

21244552414 is a wasteful number, since it uses less digits than its factorization.

21244552414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12675.

The product of its digits is 51200, while the sum is 34.

The spelling of 21244552414 in words is "twenty-one billion, two hundred forty-four million, five hundred fifty-two thousand, four hundred fourteen".