8407801266149 has 2 divisors, whose sum is σ = 8407801266150. Its totient is φ = 8407801266148.

The previous prime is 8407801266143. The next prime is 8407801266211. The reversal of 8407801266149 is 9416621087048.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8270369430625 + 137431835524 = 2875825^2 + 370718^2 .

It is a cyclic number.

It is not a de Polignac number, because 8407801266149 - 2²⁰ = 8407800217573 is a prime.

It is a super-2 number, since 2×8407801266149² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8407801266094 and 8407801266103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8407801266143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4203900633074 + 4203900633075.

It is an arithmetic number, because the mean of its divisors is an integer number (4203900633075).

Almost surely, 2^{8407801266149} is an apocalyptic number.

It is an amenable number.

8407801266149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8407801266149 is an equidigital number, since it uses as much as digits as its factorization.

8407801266149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 8407801266149 in words is "eight trillion, four hundred seven billion, eight hundred one million, two hundred sixty-six thousand, one hundred forty-nine".