42891766800045 has 16 divisors (see below), whose sum is σ = 72663699049920. Its totient is φ = 21529984903424.

The previous prime is 42891766800041. The next prime is 42891766800137. The reversal of 42891766800045 is 54000866719824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42891766800045 - 2² = 42891766800041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42891766800041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84101503275 + ... + 84101503784.

It is an arithmetic number, because the mean of its divisors is an integer number (4541481190620).

Almost surely, 2^{42891766800045} is an apocalyptic number.

It is an amenable number.

42891766800045 is a deficient number, since it is larger than the sum of its proper divisors (29771932249875).

42891766800045 is a wasteful number, since it uses less digits than its factorization.

42891766800045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168203007084.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 42891766800045 in words is "forty-two trillion, eight hundred ninety-one billion, seven hundred sixty-six million, eight hundred thousand, forty-five".