19442760036845 has 16 divisors (see below), whose sum is σ = 23453839374768. Its totient is φ = 15472550714880.

The previous prime is 19442760036839. The next prime is 19442760036877. The reversal of 19442760036845 is 54863006724491.

It can be written as a sum of positive squares in 8 ways, for example, as 17259127876 + 19425500908969 = 131374^2 + 4407437^2 .

It is not a de Polignac number, because 19442760036845 - 2⁴ = 19442760036829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3930635 + ... + 7371255.

It is an arithmetic number, because the mean of its divisors is an integer number (1465864960923).

It is a 1-persistent number, because it is pandigital, but 2⋅19442760036845 = 38885520073690 is not.

Almost surely, 2^{19442760036845} is an apocalyptic number.

It is an amenable number.

19442760036845 is a deficient number, since it is larger than the sum of its proper divisors (4011079337923).

19442760036845 is a wasteful number, since it uses less digits than its factorization.

19442760036845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446560.

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 19442760036845 in words is "nineteen trillion, four hundred forty-two billion, seven hundred sixty million, thirty-six thousand, eight hundred forty-five".