812432222234218 has 32 divisors (see below), whose sum is σ = 1230337444050000. Its totient is φ = 402322859642880.

The previous prime is 812432222234209. The next prime is 812432222234219.

It is a happy number.

812432222234218 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 633874934058129 + 178557288176089 = 25176873^2 + 13362533^2 .

It is a super-2 number, since 2×812432222234218² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (812432222234219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5375250928 + ... + 5375402068.

Almost surely, 2^{812432222234218} is an apocalyptic number.

812432222234218 is a deficient number, since it is larger than the sum of its proper divisors (417905221815782).

812432222234218 is a wasteful number, since it uses less digits than its factorization.

812432222234218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161290.

The product of its digits is 1179648, while the sum is 46.

The spelling of 812432222234218 in words is "eight hundred twelve trillion, four hundred thirty-two billion, two hundred twenty-two million, two hundred thirty-four thousand, two hundred eighteen".