673613800081 has 16 divisors (see below), whose sum is σ = 719149449600. Its totient is φ = 629088768000.

The previous prime is 673613800061. The next prime is 673613800091. The reversal of 673613800081 is 180008316376.

It is a cyclic number.

It is not a de Polignac number, because 673613800081 - 2⁵ = 673613800049 is a prime.

It is a super-2 number, since 2×673613800081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673613800031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11665681 + ... + 11723281.

It is an arithmetic number, because the mean of its divisors is an integer number (44946840600).

Almost surely, 2^673613800081 is an apocalyptic number.

It is an amenable number.

673613800081 is a deficient number, since it is larger than the sum of its proper divisors (45535649519).

673613800081 is a wasteful number, since it uses less digits than its factorization.

673613800081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66360.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 673613800081 in words is "six hundred seventy-three billion, six hundred thirteen million, eight hundred thousand, eighty-one".