81373225982345 has 8 divisors (see below), whose sum is σ = 106524950376960. Its totient is φ = 59180527987120.

The previous prime is 81373225982339. The next prime is 81373225982383. The reversal of 81373225982345 is 54328952237318.

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

It is not a de Polignac number, because 81373225982345 - 2¹⁴ = 81373225965961 is a prime.

It is an unprimeable number.

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, 739756599785 + ... + 739756599894.

It is an arithmetic number, because the mean of its divisors is an integer number (13315618797120).

Almost surely, 2^{81373225982345} is an apocalyptic number.

It is an amenable number.

81373225982345 is a deficient number, since it is larger than the sum of its proper divisors (25151724394615).

81373225982345 is a wasteful number, since it uses less digits than its factorization.

81373225982345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479513199695.

The product of its digits is 87091200, while the sum is 62.

The spelling of 81373225982345 in words is "eighty-one trillion, three hundred seventy-three billion, two hundred twenty-five million, nine hundred eighty-two thousand, three hundred forty-five".