82581315903 has 6 divisors (see below), whose sum is σ = 119284122984. Its totient is φ = 55054210596.

The previous prime is 82581315899. The next prime is 82581315953. The reversal of 82581315903 is 30951318528.

82581315903 is a `hidden beast` number, since 8 + 2 + 58 + 1 + 3 + 1 + 590 + 3 = 666.

It is not a de Polignac number, because 82581315903 - 2² = 82581315899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82581315953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4587850875 + ... + 4587850892.

It is an arithmetic number, because the mean of its divisors is an integer number (19880687164).

Almost surely, 2^82581315903 is an apocalyptic number.

82581315903 is a deficient number, since it is larger than the sum of its proper divisors (36702807081).

82581315903 is a wasteful number, since it uses less digits than its factorization.

82581315903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175701773 (or 9175701770 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 82581315903 in words is "eighty-two billion, five hundred eighty-one million, three hundred fifteen thousand, nine hundred three".