81265812058110 has 32 divisors (see below), whose sum is σ = 196827287928480. Its totient is φ = 21472067772288.

The previous prime is 81265812058087. The next prime is 81265812058177. The reversal of 81265812058110 is 1185021856218.

It is a self number, because there is not a number n which added to its sum of digits gives 81265812058110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12425961877 + ... + 12425968416.

It is an arithmetic number, because the mean of its divisors is an integer number (6150852747765).

Almost surely, 2^{81265812058110} is an apocalyptic number.

81265812058110 is an abundant number, since it is smaller than the sum of its proper divisors (115561475870370).

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

81265812058110 is a wasteful number, since it uses less digits than its factorization.

81265812058110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24851930412.

The product of its (nonzero) digits is 307200, while the sum is 48.

The spelling of 81265812058110 in words is "eighty-one trillion, two hundred sixty-five billion, eight hundred twelve million, fifty-eight thousand, one hundred ten".