40042523445 has 8 divisors (see below), whose sum is σ = 64068037536. Its totient is φ = 21356012496.

The previous prime is 40042523407. The next prime is 40042523447. The reversal of 40042523445 is 54432524004.

40042523445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40042523445 - 2⁷ = 40042523317 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 (40042523447) 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, 1334750767 + ... + 1334750796.

It is an arithmetic number, because the mean of its divisors is an integer number (8008504692).

Almost surely, 2^40042523445 is an apocalyptic number.

It is an amenable number.

40042523445 is a deficient number, since it is larger than the sum of its proper divisors (24025514091).

40042523445 is a wasteful number, since it uses less digits than its factorization.

40042523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669501571.

The product of its (nonzero) digits is 76800, while the sum is 33.

The spelling of 40042523445 in words is "forty billion, forty-two million, five hundred twenty-three thousand, four hundred forty-five".