86435728658 has 8 divisors (see below), whose sum is σ = 129655460028. Its totient is φ = 43217241984.

The previous prime is 86435728651. The next prime is 86435728697. The reversal of 86435728658 is 85682753468.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82830566809 + 3605161849 = 287803^2 + 60043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×86435728658² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86435728658.

It is not an unprimeable number, because it can be changed into a prime (86435728651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112091 + ... + 430622.

Almost surely, 2^86435728658 is an apocalyptic number.

86435728658 is a deficient number, since it is larger than the sum of its proper divisors (43219731370).

86435728658 is a wasteful number, since it uses less digits than its factorization.

86435728658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622348.

The product of its digits is 77414400, while the sum is 62.

The spelling of 86435728658 in words is "eighty-six billion, four hundred thirty-five million, seven hundred twenty-eight thousand, six hundred fifty-eight".