81206700760218 has 32 divisors (see below), whose sum is σ = 179822707799040. Its totient is φ = 24240806195760.

The previous prime is 81206700760037. The next prime is 81206700760231.

81206700760218 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9182119138 + ... + 9182127981.

It is an arithmetic number, because the mean of its divisors is an integer number (5619459618720).

Almost surely, 2^{81206700760218} is an apocalyptic number.

81206700760218 is an abundant number, since it is smaller than the sum of its proper divisors (98616007038822).

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

81206700760218 is a wasteful number, since it uses less digits than its factorization.

81206700760218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18364247202.

The product of its (nonzero) digits is 451584, while the sum is 48.

It can be divided in two parts, 81206700 and 760218, that added together give a palindrome (81966918).

The spelling of 81206700760218 in words is "eighty-one trillion, two hundred six billion, seven hundred million, seven hundred sixty thousand, two hundred eighteen".