19500764545089 has 15 divisors (see below), whose sum is σ = 29130831098193. Its totient is φ = 13000483200924.

The previous prime is 19500764545069. The next prime is 19500764545111. The reversal of 19500764545089 is 98054546700591.

The square root of 19500764545089 is 4415967.

It is a perfect power (a square), and thus also a powerful number.

19500764545089 is a `hidden beast` number, since 1 + 9 + 5 + 0 + 0 + 7 + 6 + 4 + 545 + 0 + 89 = 666.

It is not a de Polignac number, because 19500764545089 - 2¹¹ = 19500764543041 is a prime.

It is a super-2 number, since 2×19500764545089² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19500764545069) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 39498372 + ... + 39989034.

Almost surely, 2^{19500764545089} is an apocalyptic number.

19500764545089 is the 4415967-th square number.

19500764545089 is the 2207984-th centered octagonal number.

It is an amenable number.

19500764545089 is a deficient number, since it is larger than the sum of its proper divisors (9630066553104).

19500764545089 is an frugal number, since it uses more digits than its factorization.

19500764545089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981338 (or 490666 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 63.

The spelling of 19500764545089 in words is "nineteen trillion, five hundred billion, seven hundred sixty-four million, five hundred forty-five thousand, eighty-nine".