8450381420066 has 4 divisors (see below), whose sum is σ = 12675572130102. Its totient is φ = 4225190710032.

The previous prime is 8450381420059. The next prime is 8450381420111. The reversal of 8450381420066 is 6600241830548.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6751344772225 + 1699036647841 = 2598335^2 + 1303471^2 .

It is a super-2 number, since 2×8450381420066² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8450381420066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112595355015 + ... + 2112595355018.

Almost surely, 2^{8450381420066} is an apocalyptic number.

8450381420066 is a deficient number, since it is larger than the sum of its proper divisors (4225190710036).

8450381420066 is a wasteful number, since it uses less digits than its factorization.

8450381420066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225190710035.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 8450381420066 in words is "eight trillion, four hundred fifty billion, three hundred eighty-one million, four hundred twenty thousand, sixty-six".