40669457862149 has 2 divisors, whose sum is σ = 40669457862150. Its totient is φ = 40669457862148.

The previous prime is 40669457862107. The next prime is 40669457862151. The reversal of 40669457862149 is 94126875496604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29681989741924 + 10987468120225 = 5448118^2 + 3314735^2 .

It is a cyclic number.

It is not a de Polignac number, because 40669457862149 - 2¹² = 40669457858053 is a prime.

It is a super-2 number, since 2×40669457862149² (a number of 28 digits) contains 22 as substring.

Together with 40669457862151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40669457862179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20334728931074 + 20334728931075.

It is an arithmetic number, because the mean of its divisors is an integer number (20334728931075).

Almost surely, 2^{40669457862149} is an apocalyptic number.

It is an amenable number.

40669457862149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40669457862149 is an equidigital number, since it uses as much as digits as its factorization.

40669457862149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 627056640, while the sum is 71.

The spelling of 40669457862149 in words is "forty trillion, six hundred sixty-nine billion, four hundred fifty-seven million, eight hundred sixty-two thousand, one hundred forty-nine".