40347324557 has 2 divisors, whose sum is σ = 40347324558. Its totient is φ = 40347324556.

The previous prime is 40347324509. The next prime is 40347324559. The reversal of 40347324557 is 75542374304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39209544196 + 1137780361 = 198014^2 + 33731^2 .

It is a cyclic number.

It is not a de Polignac number, because 40347324557 - 2⁸ = 40347324301 is a prime.

Together with 40347324559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40347324559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20173662278 + 20173662279.

It is an arithmetic number, because the mean of its divisors is an integer number (20173662279).

Almost surely, 2^40347324557 is an apocalyptic number.

It is an amenable number.

40347324557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40347324557 is an equidigital number, since it uses as much as digits as its factorization.

40347324557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 44.

The spelling of 40347324557 in words is "forty billion, three hundred forty-seven million, three hundred twenty-four thousand, five hundred fifty-seven".