21992014726 has 16 divisors (see below), whose sum is σ = 36019897488. Its totient is φ = 9987213600.

The previous prime is 21992014717. The next prime is 21992014789. The reversal of 21992014726 is 62741029912.

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, 433245 + ... + 481336.

It is an arithmetic number, because the mean of its divisors is an integer number (2251243593).

Almost surely, 2^21992014726 is an apocalyptic number.

21992014726 is a deficient number, since it is larger than the sum of its proper divisors (14027882762).

21992014726 is a wasteful number, since it uses less digits than its factorization.

21992014726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915687.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 21992014726 in words is "twenty-one billion, nine hundred ninety-two million, fourteen thousand, seven hundred twenty-six".