40023175397 has 2 divisors, whose sum is σ = 40023175398. Its totient is φ = 40023175396.

The previous prime is 40023175393. The next prime is 40023175427. The reversal of 40023175397 is 79357132004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37760651041 + 2262524356 = 194321^2 + 47566^2 .

It is a cyclic number.

It is not a de Polignac number, because 40023175397 - 2² = 40023175393 is a prime.

It is a super-3 number, since 3×40023175397³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40023175393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20011587698 + 20011587699.

It is an arithmetic number, because the mean of its divisors is an integer number (20011587699).

Almost surely, 2^40023175397 is an apocalyptic number.

It is an amenable number.

40023175397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40023175397 is an equidigital number, since it uses as much as digits as its factorization.

40023175397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 40023175397 in words is "forty billion, twenty-three million, one hundred seventy-five thousand, three hundred ninety-seven".