40164202291 has 2 divisors, whose sum is σ = 40164202292. Its totient is φ = 40164202290.

The previous prime is 40164202289. The next prime is 40164202319. The reversal of 40164202291 is 19220246104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40164202291 - 2¹ = 40164202289 is a prime.

It is a super-2 number, since 2×40164202291² (a number of 22 digits) contains 22 as substring.

Together with 40164202289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40164202271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20082101145 + 20082101146.

It is an arithmetic number, because the mean of its divisors is an integer number (20082101146).

Almost surely, 2^40164202291 is an apocalyptic number.

40164202291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40164202291 is an equidigital number, since it uses as much as digits as its factorization.

40164202291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 40164202291 its reverse (19220246104), we get a palindrome (59384448395).

The spelling of 40164202291 in words is "forty billion, one hundred sixty-four million, two hundred two thousand, two hundred ninety-one".