85461216458 has 8 divisors (see below), whose sum is σ = 129461050980. Its totient is φ = 42307532800.

The previous prime is 85461216389. The next prime is 85461216469.

85461216458 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 85324162609 + 137053849 = 292103^2 + 11707^2 .

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

It is a super-2 number, since 2×85461216458² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211537463 + ... + 211537866.

Almost surely, 2^85461216458 is an apocalyptic number.

85461216458 is a deficient number, since it is larger than the sum of its proper divisors (43999834522).

85461216458 is a wasteful number, since it uses less digits than its factorization.

85461216458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423075432.

The product of its digits is 1843200, while the sum is 50.

The spelling of 85461216458 in words is "eighty-five billion, four hundred sixty-one million, two hundred sixteen thousand, four hundred fifty-eight".