19801222809049 has 8 divisors (see below), whose sum is σ = 22872000678048. Its totient is φ = 16942222724160.

The previous prime is 19801222809031. The next prime is 19801222809101. The reversal of 19801222809049 is 94090822210891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19801222809049 - 2⁷ = 19801222808921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19801222809649) 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, 52944445827 + ... + 52944446200.

It is an arithmetic number, because the mean of its divisors is an integer number (2859000084756).

Almost surely, 2^{19801222809049} is an apocalyptic number.

It is an amenable number.

19801222809049 is a deficient number, since it is larger than the sum of its proper divisors (3070777868999).

19801222809049 is a wasteful number, since it uses less digits than its factorization.

19801222809049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105888892055.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 19801222809049 in words is "nineteen trillion, eight hundred one billion, two hundred twenty-two million, eight hundred nine thousand, forty-nine".