81130346983 has 12 divisors (see below), whose sum is σ = 94399375800. Its totient is φ = 69523160112.

The previous prime is 81130346963. The next prime is 81130347061. The reversal of 81130346983 is 38964303118.

It is not a de Polignac number, because 81130346983 - 2¹⁷ = 81130215911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81130346963) 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, 1116 + ... + 402817.

It is an arithmetic number, because the mean of its divisors is an integer number (7866614650).

Almost surely, 2^81130346983 is an apocalyptic number.

81130346983 is a deficient number, since it is larger than the sum of its proper divisors (13269028817).

81130346983 is a wasteful number, since it uses less digits than its factorization.

81130346983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408046 (or 408039 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 81130346983 in words is "eighty-one billion, one hundred thirty million, three hundred forty-six thousand, nine hundred eighty-three".