65085615858 has 8 divisors (see below), whose sum is σ = 130171231728. Its totient is φ = 21695205284.

The previous prime is 65085615857. The next prime is 65085615871. The reversal of 65085615858 is 85851658056.

It is a happy number.

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

65085615858 is an admirable number.

It is a super-2 number, since 2×65085615858² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65085615798 and 65085615807.

It is not an unprimeable number, because it can be changed into a prime (65085615857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5423801316 + ... + 5423801327.

It is an arithmetic number, because the mean of its divisors is an integer number (16271403966).

Almost surely, 2^65085615858 is an apocalyptic number.

65085615858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65085615858 is a wasteful number, since it uses less digits than its factorization.

65085615858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10847602648.

The product of its (nonzero) digits is 11520000, while the sum is 57.

The spelling of 65085615858 in words is "sixty-five billion, eighty-five million, six hundred fifteen thousand, eight hundred fifty-eight".