40354869318523 has 2 divisors, whose sum is σ = 40354869318524. Its totient is φ = 40354869318522.

The previous prime is 40354869318481. The next prime is 40354869318563. The reversal of 40354869318523 is 32581396845304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40354869318523 is a prime.

It is not a weakly prime, because it can be changed into another prime (40354869318563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20177434659261 + 20177434659262.

It is an arithmetic number, because the mean of its divisors is an integer number (20177434659262).

Almost surely, 2^{40354869318523} is an apocalyptic number.

40354869318523 is a deficient number, since it is larger than the sum of its proper divisors (1).

40354869318523 is an equidigital number, since it uses as much as digits as its factorization.

40354869318523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74649600, while the sum is 61.

The spelling of 40354869318523 in words is "forty trillion, three hundred fifty-four billion, eight hundred sixty-nine million, three hundred eighteen thousand, five hundred twenty-three".