81527745355 has 16 divisors (see below), whose sum is σ = 111822336000. Its totient is φ = 55898311392.

The previous prime is 81527745337. The next prime is 81527745361. The reversal of 81527745355 is 55354772518.

It is not a de Polignac number, because 81527745355 - 2¹⁷ = 81527614283 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185542 + ... + 444388.

It is an arithmetic number, because the mean of its divisors is an integer number (6988896000).

Almost surely, 2^81527745355 is an apocalyptic number.

81527745355 is a deficient number, since it is larger than the sum of its proper divisors (30294590645).

81527745355 is a wasteful number, since it uses less digits than its factorization.

81527745355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267858.

The product of its digits is 5880000, while the sum is 52.

The spelling of 81527745355 in words is "eighty-one billion, five hundred twenty-seven million, seven hundred forty-five thousand, three hundred fifty-five".