81079130673 has 12 divisors (see below), whose sum is σ = 123278210640. Its totient is φ = 51207871896.

The previous prime is 81079130663. The next prime is 81079130683. The reversal of 81079130673 is 37603197018.

It is an interprime number because it is at equal distance from previous prime (81079130663) and next prime (81079130683).

It is not a de Polignac number, because 81079130673 - 2⁶ = 81079130609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81079130633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237073311 + ... + 237073652.

It is an arithmetic number, because the mean of its divisors is an integer number (10273184220).

Almost surely, 2^81079130673 is an apocalyptic number.

It is an amenable number.

81079130673 is a deficient number, since it is larger than the sum of its proper divisors (42199079967).

81079130673 is a wasteful number, since it uses less digits than its factorization.

81079130673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474146988 (or 474146985 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 81079130673 in words is "eighty-one billion, seventy-nine million, one hundred thirty thousand, six hundred seventy-three".