85811530718 has 4 divisors (see below), whose sum is σ = 128717296080. Its totient is φ = 42905765358.

The previous prime is 85811530711. The next prime is 85811530747. The reversal of 85811530718 is 81703511858.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85811530711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21452882678 + ... + 21452882681.

It is an arithmetic number, because the mean of its divisors is an integer number (32179324020).

Almost surely, 2^85811530718 is an apocalyptic number.

85811530718 is a deficient number, since it is larger than the sum of its proper divisors (42905765362).

85811530718 is a wasteful number, since it uses less digits than its factorization.

85811530718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42905765361.

The product of its (nonzero) digits is 268800, while the sum is 47.

The spelling of 85811530718 in words is "eighty-five billion, eight hundred eleven million, five hundred thirty thousand, seven hundred eighteen".