81383260307 has 8 divisors (see below), whose sum is σ = 81743073984. Its totient is φ = 81023537088.

The previous prime is 81383260279. The next prime is 81383260331. The reversal of 81383260307 is 70306238318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81383260307 - 2¹² = 81383256211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81383260337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306198 + ... + 2341220.

It is an arithmetic number, because the mean of its divisors is an integer number (10217884248).

Almost surely, 2^81383260307 is an apocalyptic number.

81383260307 is a deficient number, since it is larger than the sum of its proper divisors (359813677).

81383260307 is a wasteful number, since it uses less digits than its factorization.

81383260307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45229.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 81383260307 in words is "eighty-one billion, three hundred eighty-three million, two hundred sixty thousand, three hundred seven".