40523264189 has 2 divisors, whose sum is σ = 40523264190. Its totient is φ = 40523264188.

The previous prime is 40523264167. The next prime is 40523264269. The reversal of 40523264189 is 98146232504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32451140164 + 8072124025 = 180142^2 + 89845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40523264189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40523264489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20261632094 + 20261632095.

It is an arithmetic number, because the mean of its divisors is an integer number (20261632095).

Almost surely, 2^40523264189 is an apocalyptic number.

It is an amenable number.

40523264189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40523264189 is an equidigital number, since it uses as much as digits as its factorization.

40523264189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 40523264189 in words is "forty billion, five hundred twenty-three million, two hundred sixty-four thousand, one hundred eighty-nine".