216251423446 has 16 divisors (see below), whose sum is σ = 341969985504. Its totient is φ = 102358358784.

The previous prime is 216251423441. The next prime is 216251423447. The reversal of 216251423446 is 644324152612.

It is a junction number, because it is equal to n+sod(n) for n = 216251423399 and 216251423408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216251423441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24228105 + ... + 24237028.

It is an arithmetic number, because the mean of its divisors is an integer number (21373124094).

Almost surely, 2^216251423446 is an apocalyptic number.

216251423446 is a deficient number, since it is larger than the sum of its proper divisors (125718562058).

216251423446 is a wasteful number, since it uses less digits than its factorization.

216251423446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48465255.

The product of its digits is 276480, while the sum is 40.

The spelling of 216251423446 in words is "two hundred sixteen billion, two hundred fifty-one million, four hundred twenty-three thousand, four hundred forty-six".