81103545282 has 32 divisors (see below), whose sum is σ = 162836321472. Its totient is φ = 26929767744.

The previous prime is 81103545269. The next prime is 81103545319. The reversal of 81103545282 is 28254530118.

It is a self number, because there is not a number n which added to its sum of digits gives 81103545282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2748933 + ... + 2778279.

It is an arithmetic number, because the mean of its divisors is an integer number (5088635046).

Almost surely, 2^81103545282 is an apocalyptic number.

81103545282 is an abundant number, since it is smaller than the sum of its proper divisors (81732776190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81103545282 is a wasteful number, since it uses less digits than its factorization.

81103545282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31122.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 81103545282 in words is "eighty-one billion, one hundred three million, five hundred forty-five thousand, two hundred eighty-two".