40023770417 has 2 divisors, whose sum is σ = 40023770418. Its totient is φ = 40023770416.

The previous prime is 40023770399. The next prime is 40023770419. The reversal of 40023770417 is 71407732004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39663112336 + 360658081 = 199156^2 + 18991^2 .

It is a cyclic number.

It is not a de Polignac number, because 40023770417 - 2¹⁴ = 40023754033 is a prime.

Together with 40023770419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40023770419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20011885208 + 20011885209.

It is an arithmetic number, because the mean of its divisors is an integer number (20011885209).

Almost surely, 2^40023770417 is an apocalyptic number.

It is an amenable number.

40023770417 is a deficient number, since it is larger than the sum of its proper divisors (1).

40023770417 is an equidigital number, since it uses as much as digits as its factorization.

40023770417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 35.

The spelling of 40023770417 in words is "forty billion, twenty-three million, seven hundred seventy thousand, four hundred seventeen".