19612422648906 has 64 divisors (see below), whose sum is σ = 41010126667776. Its totient is φ = 6245463153600.

The previous prime is 19612422648893. The next prime is 19612422648947. The reversal of 19612422648906 is 60984622421691.

It is a self number, because there is not a number n which added to its sum of digits gives 19612422648906.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19216911 + ... + 20211741.

It is an arithmetic number, because the mean of its divisors is an integer number (640783229184).

Almost surely, 2^{19612422648906} is an apocalyptic number.

19612422648906 is an abundant number, since it is smaller than the sum of its proper divisors (21397704018870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19612422648906 is a wasteful number, since it uses less digits than its factorization.

19612422648906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996227.

The product of its (nonzero) digits is 17915904, while the sum is 60.

The spelling of 19612422648906 in words is "nineteen trillion, six hundred twelve billion, four hundred twenty-two million, six hundred forty-eight thousand, nine hundred six".