40258943721397 has 2 divisors, whose sum is σ = 40258943721398. Its totient is φ = 40258943721396.

The previous prime is 40258943721331. The next prime is 40258943721413. The reversal of 40258943721397 is 79312734985204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21653256729636 + 18605686991761 = 4653306^2 + 4313431^2 .

It is a cyclic number.

It is not a de Polignac number, because 40258943721397 - 2³⁹ = 39709187907509 is a prime.

It is a super-2 number, since 2×40258943721397² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40258943721307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20129471860698 + 20129471860699.

It is an arithmetic number, because the mean of its divisors is an integer number (20129471860699).

Almost surely, 2^{40258943721397} is an apocalyptic number.

It is an amenable number.

40258943721397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40258943721397 is an equidigital number, since it uses as much as digits as its factorization.

40258943721397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 64.

The spelling of 40258943721397 in words is "forty trillion, two hundred fifty-eight billion, nine hundred forty-three million, seven hundred twenty-one thousand, three hundred ninety-seven".