40200342997 has 2 divisors, whose sum is σ = 40200342998. Its totient is φ = 40200342996.

The previous prime is 40200342953. The next prime is 40200343019. The reversal of 40200342997 is 79924300204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40093654756 + 106688241 = 200234^2 + 10329^2 .

It is a cyclic number.

It is not a de Polignac number, because 40200342997 - 2³⁵ = 5840604629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40200349997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20100171498 + 20100171499.

It is an arithmetic number, because the mean of its divisors is an integer number (20100171499).

Almost surely, 2^40200342997 is an apocalyptic number.

It is an amenable number.

40200342997 is a deficient number, since it is larger than the sum of its proper divisors (1).

40200342997 is an equidigital number, since it uses as much as digits as its factorization.

40200342997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 40200342997 in words is "forty billion, two hundred million, three hundred forty-two thousand, nine hundred ninety-seven".