40505501923 has 2 divisors, whose sum is σ = 40505501924. Its totient is φ = 40505501922.

The previous prime is 40505501893. The next prime is 40505501957. The reversal of 40505501923 is 32910550504.

40505501923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40505501957) can be obtained adding 40505501923 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40505501923 - 2¹³ = 40505493731 is a prime.

It is not a weakly prime, because it can be changed into another prime (40505501723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252750961 + 20252750962.

It is an arithmetic number, because the mean of its divisors is an integer number (20252750962).

Almost surely, 2^40505501923 is an apocalyptic number.

40505501923 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505501923 is an equidigital number, since it uses as much as digits as its factorization.

40505501923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 40505501923 in words is "forty billion, five hundred five million, five hundred one thousand, nine hundred twenty-three".