87322712418 has 126 divisors (see below), whose sum is σ = 201035434257. Its totient is φ = 28434324240.

The previous prime is 87322712413. The next prime is 87322712443. The reversal of 87322712418 is 81421722378.

87322712418 is a `hidden beast` number, since 8 + 7 + 3 + 227 + 1 + 2 + 418 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83791144089 + 3531568329 = 289467^2 + 59427^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=208953.

It is a super-2 number, since 2×87322712418² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87322712413) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 801125748 + ... + 801125856.

Almost surely, 2^87322712418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87322712418

87322712418 is an abundant number, since it is smaller than the sum of its proper divisors (113712721839).

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

87322712418 is an frugal number, since it uses more digits than its factorization.

87322712418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 185 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The spelling of 87322712418 in words is "eighty-seven billion, three hundred twenty-two million, seven hundred twelve thousand, four hundred eighteen".