84326567138 has 30 divisors (see below), whose sum is σ = 139220010705. Its totient is φ = 38307670720.

The previous prime is 84326567131. The next prime is 84326567167. The reversal of 84326567138 is 83176562348.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58154769409 + 26171797729 = 241153^2 + 161777^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=205337.

It is a super-2 number, since 2×84326567138² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84326567138.

It is not an unprimeable number, because it can be changed into a prime (84326567131) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 49690706 + ... + 49692402.

Almost surely, 2^84326567138 is an apocalyptic number.

84326567138 is a deficient number, since it is larger than the sum of its proper divisors (54893443567).

84326567138 is an frugal number, since it uses more digits than its factorization.

84326567138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440 (or 1710 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The spelling of 84326567138 in words is "eighty-four billion, three hundred twenty-six million, five hundred sixty-seven thousand, one hundred thirty-eight".