81083910479 has 8 divisors (see below), whose sum is σ = 95259419472. Its totient is φ = 68042442240.

The previous prime is 81083910463. The next prime is 81083910559. The reversal of 81083910479 is 97401938018.

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 81083910479 - 2⁴ = 81083910463 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 (81083910449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283510034 + ... + 283510319.

It is an arithmetic number, because the mean of its divisors is an integer number (11907427434).

Almost surely, 2^81083910479 is an apocalyptic number.

81083910479 is a deficient number, since it is larger than the sum of its proper divisors (14175508993).

81083910479 is a wasteful number, since it uses less digits than its factorization.

81083910479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567020377.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 81083910479 in words is "eighty-one billion, eighty-three million, nine hundred ten thousand, four hundred seventy-nine".