19961289202 has 16 divisors (see below), whose sum is σ = 30156588000. Its totient is φ = 9909347328.

The previous prime is 19961289149. The next prime is 19961289203. The reversal of 19961289202 is 20298216991.

It is not an unprimeable number, because it can be changed into a prime (19961289203) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 94549 + ... + 221047.

It is an arithmetic number, because the mean of its divisors is an integer number (1884786750).

Almost surely, 2^19961289202 is an apocalyptic number.

19961289202 is a deficient number, since it is larger than the sum of its proper divisors (10195298798).

19961289202 is a wasteful number, since it uses less digits than its factorization.

19961289202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127065.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 19961289202 in words is "nineteen billion, nine hundred sixty-one million, two hundred eighty-nine thousand, two hundred two".