19973301642 has 48 divisors (see below), whose sum is σ = 49479947712. Its totient is φ = 5704090560.

The previous prime is 19973301617. The next prime is 19973301653. The reversal of 19973301642 is 24610337991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254917 + ... + 323927.

It is an arithmetic number, because the mean of its divisors is an integer number (1030832244).

Almost surely, 2^19973301642 is an apocalyptic number.

19973301642 is an abundant number, since it is smaller than the sum of its proper divisors (29506646070).

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

19973301642 is a wasteful number, since it uses less digits than its factorization.

19973301642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71323 (or 71320 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 19973301642 in words is "nineteen billion, nine hundred seventy-three million, three hundred one thousand, six hundred forty-two".