81300526345 has 8 divisors (see below), whose sum is σ = 99829483776. Its totient is φ = 63527852976.

The previous prime is 81300526331. The next prime is 81300526367. The reversal of 81300526345 is 54362500318.

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 81300526345 - 2¹³ = 81300518153 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 7 ways as a sum of consecutive naturals, for example, 189070777 + ... + 189071206.

It is an arithmetic number, because the mean of its divisors is an integer number (12478685472).

Almost surely, 2^81300526345 is an apocalyptic number.

It is an amenable number.

81300526345 is a deficient number, since it is larger than the sum of its proper divisors (18528957431).

81300526345 is a wasteful number, since it uses less digits than its factorization.

81300526345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378142031.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 81300526345 in words is "eighty-one billion, three hundred million, five hundred twenty-six thousand, three hundred forty-five".