16426780695568 has 20 divisors (see below), whose sum is σ = 31828933641280. Its totient is φ = 8212862336544.

The previous prime is 16426780695547. The next prime is 16426780695581. The reversal of 16426780695568 is 86559608762461.

It is a self number, because there is not a number n which added to its sum of digits gives 16426780695568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32743980 + ... + 33241867.

It is an arithmetic number, because the mean of its divisors is an integer number (1591446682064).

Almost surely, 2^{16426780695568} is an apocalyptic number.

It is an amenable number.

16426780695568 is a deficient number, since it is larger than the sum of its proper divisors (15402152945712).

16426780695568 is a wasteful number, since it uses less digits than its factorization.

16426780695568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66001414 (or 66001408 counting only the distinct ones).

The product of its (nonzero) digits is 1045094400, while the sum is 73.

The spelling of 16426780695568 in words is "sixteen trillion, four hundred twenty-six billion, seven hundred eighty million, six hundred ninety-five thousand, five hundred sixty-eight".