40685150934397 has 2 divisors, whose sum is σ = 40685150934398. Its totient is φ = 40685150934396.

The previous prime is 40685150934347. The next prime is 40685150934419. The reversal of 40685150934397 is 79343905158604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38096620684516 + 2588530249881 = 6172246^2 + 1608891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40685150934397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40685150934347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20342575467198 + 20342575467199.

It is an arithmetic number, because the mean of its divisors is an integer number (20342575467199).

Almost surely, 2^{40685150934397} is an apocalyptic number.

It is an amenable number.

40685150934397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40685150934397 is an equidigital number, since it uses as much as digits as its factorization.

40685150934397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97977600, while the sum is 64.

The spelling of 40685150934397 in words is "forty trillion, six hundred eighty-five billion, one hundred fifty million, nine hundred thirty-four thousand, three hundred ninety-seven".