8451291366 has 36 divisors (see below), whose sum is σ = 21300705972. Its totient is φ = 2414654424.

The previous prime is 8451291361. The next prime is 8451291427. The reversal of 8451291366 is 6631921548.

It is a super-2 number, since 2×8451291366² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8451291361) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4790100 + ... + 4791863.

It is an arithmetic number, because the mean of its divisors is an integer number (591686277).

Almost surely, 2^8451291366 is an apocalyptic number.

8451291366 is an abundant number, since it is smaller than the sum of its proper divisors (12849414606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8451291366 is a wasteful number, since it uses less digits than its factorization.

8451291366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9581985 (or 9581975 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 8451291366 is about 91930.9053909511. The cubic root of 8451291366 is about 2036.9218094478.

The spelling of 8451291366 in words is "eight billion, four hundred fifty-one million, two hundred ninety-one thousand, three hundred sixty-six".