19573856161145 has 32 divisors (see below), whose sum is σ = 27683194137984. Its totient is φ = 13098508300800.

The previous prime is 19573856161141. The next prime is 19573856161199. The reversal of 19573856161145 is 54116165837591.

It is not a de Polignac number, because 19573856161145 - 2² = 19573856161141 is a prime.

It is a super-2 number, since 2×19573856161145² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a partition number, being equal to the number of ways a set of 219 identical objects can be partitioned into subset.

It is not an unprimeable number, because it can be changed into a prime (19573856161141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43507871 + ... + 43955460.

It is an arithmetic number, because the mean of its divisors is an integer number (865099816812).

Almost surely, 2^{19573856161145} is an apocalyptic number.

It is an amenable number.

19573856161145 is a deficient number, since it is larger than the sum of its proper divisors (8109337976839).

19573856161145 is a wasteful number, since it uses less digits than its factorization.

19573856161145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87463673.

The product of its digits is 27216000, while the sum is 62.

The spelling of 19573856161145 in words is "nineteen trillion, five hundred seventy-three billion, eight hundred fifty-six million, one hundred sixty-one thousand, one hundred forty-five".