85846664858 has 4 divisors (see below), whose sum is σ = 128769997290. Its totient is φ = 42923332428.

The previous prime is 85846664851. The next prime is 85846664993.

It is a happy number.

85846664858 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84950680369 + 895984489 = 291463^2 + 29933^2 .

It is not an unprimeable number, because it can be changed into a prime (85846664851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21461666213 + ... + 21461666216.

Almost surely, 2^85846664858 is an apocalyptic number.

85846664858 is a deficient number, since it is larger than the sum of its proper divisors (42923332432).

85846664858 is a wasteful number, since it uses less digits than its factorization.

85846664858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42923332431.

The product of its digits is 353894400, while the sum is 68.

The spelling of 85846664858 in words is "eighty-five billion, eight hundred forty-six million, six hundred sixty-four thousand, eight hundred fifty-eight".