81413791303625 has 64 divisors (see below), whose sum is σ = 114424220491776. Its totient is φ = 57296261880000.

The previous prime is 81413791303609. The next prime is 81413791303631. The reversal of 81413791303625 is 52630319731418.

It is not a de Polignac number, because 81413791303625 - 2⁴ = 81413791303609 is a prime.

It is a Duffinian number.

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 63 ways as a sum of consecutive naturals, for example, 754706942 + ... + 754814808.

It is an arithmetic number, because the mean of its divisors is an integer number (1787878445184).

It is a 1-persistent number, because it is pandigital, but 2⋅81413791303625 = 162827582607250 is not.

Almost surely, 2^{81413791303625} is an apocalyptic number.

It is an amenable number.

81413791303625 is a deficient number, since it is larger than the sum of its proper divisors (33010429188151).

81413791303625 is a wasteful number, since it uses less digits than its factorization.

81413791303625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125631 (or 125621 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 81413791303625 in words is "eighty-one trillion, four hundred thirteen billion, seven hundred ninety-one million, three hundred three thousand, six hundred twenty-five".