21850627042 has 32 divisors (see below), whose sum is σ = 34296663600. Its totient is φ = 10427424000.

The previous prime is 21850627033. The next prime is 21850627069. The reversal of 21850627042 is 24072605812.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15719893641 + 6130733401 = 125379^2 + 78299^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21850626992 and 21850627010.

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 15 ways as a sum of consecutive naturals, for example, 4150692 + ... + 4155952.

Almost surely, 2^21850627042 is an apocalyptic number.

21850627042 is a deficient number, since it is larger than the sum of its proper divisors (12446036558).

21850627042 is a wasteful number, since it uses less digits than its factorization.

21850627042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 21850627042 in words is "twenty-one billion, eight hundred fifty million, six hundred twenty-seven thousand, forty-two".