81472827418 has 16 divisors (see below), whose sum is σ = 126980304480. Its totient is φ = 39158436016.

The previous prime is 81472827409. The next prime is 81472827571.

81472827418 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×81472827418³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3080896 + ... + 3107227.

It is an arithmetic number, because the mean of its divisors is an integer number (7936269030).

Almost surely, 2^81472827418 is an apocalyptic number.

81472827418 is a deficient number, since it is larger than the sum of its proper divisors (45507477062).

81472827418 is a wasteful number, since it uses less digits than its factorization.

81472827418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188381.

The product of its digits is 1605632, while the sum is 52.

The spelling of 81472827418 in words is "eighty-one billion, four hundred seventy-two million, eight hundred twenty-seven thousand, four hundred eighteen".