81683415303 has 8 divisors (see below), whose sum is σ = 124469966208. Its totient is φ = 46676237304.

The previous prime is 81683415293. The next prime is 81683415347. The reversal of 81683415303 is 30351438618.

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

It is not a de Polignac number, because 81683415303 - 2¹⁶ = 81683349767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81683415383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944843201 + ... + 1944843242.

It is an arithmetic number, because the mean of its divisors is an integer number (15558745776).

Almost surely, 2^81683415303 is an apocalyptic number.

81683415303 is a deficient number, since it is larger than the sum of its proper divisors (42786550905).

81683415303 is a wasteful number, since it uses less digits than its factorization.

81683415303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889686453.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 81683415303 in words is "eighty-one billion, six hundred eighty-three million, four hundred fifteen thousand, three hundred three".