40255456402123 has 2 divisors, whose sum is σ = 40255456402124. Its totient is φ = 40255456402122.

The previous prime is 40255456402103. The next prime is 40255456402127. The reversal of 40255456402123 is 32120465455204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40255456402123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40255456402123.

It is not a weakly prime, because it can be changed into another prime (40255456402127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127728201061 + 20127728201062.

It is an arithmetic number, because the mean of its divisors is an integer number (20127728201062).

Almost surely, 2^{40255456402123} is an apocalyptic number.

40255456402123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40255456402123 is an equidigital number, since it uses as much as digits as its factorization.

40255456402123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 40255456402123 in words is "forty trillion, two hundred fifty-five billion, four hundred fifty-six million, four hundred two thousand, one hundred twenty-three".