40445140523 has 2 divisors, whose sum is σ = 40445140524. Its totient is φ = 40445140522.

The previous prime is 40445140513. The next prime is 40445140529. The reversal of 40445140523 is 32504154404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40445140523 - 2⁴ = 40445140507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40445140523.

It is not a weakly prime, because it can be changed into another prime (40445140529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222570261 + 20222570262.

It is an arithmetic number, because the mean of its divisors is an integer number (20222570262).

Almost surely, 2^40445140523 is an apocalyptic number.

40445140523 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445140523 is an equidigital number, since it uses as much as digits as its factorization.

40445140523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 40445140523 its reverse (32504154404), we get a palindrome (72949294927).

The spelling of 40445140523 in words is "forty billion, four hundred forty-five million, one hundred forty thousand, five hundred twenty-three".