81468006674 has 4 divisors (see below), whose sum is σ = 122202010014. Its totient is φ = 40734003336.

The previous prime is 81468006649. The next prime is 81468006709. The reversal of 81468006674 is 47660086418.

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., 61947725449 + 19520281225 = 248893^2 + 139715^2 .

It is a super-2 number, since 2×81468006674² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20367001667 + ... + 20367001670.

Almost surely, 2^81468006674 is an apocalyptic number.

81468006674 is a deficient number, since it is larger than the sum of its proper divisors (40734003340).

81468006674 is a wasteful number, since it uses less digits than its factorization.

81468006674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40734003339.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 81468006674 in words is "eighty-one billion, four hundred sixty-eight million, six thousand, six hundred seventy-four".