85851018264 has 128 divisors (see below), whose sum is σ = 244665100800. Its totient is φ = 24849116160.

The previous prime is 85851018263. The next prime is 85851018271. The reversal of 85851018264 is 46281015858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85851018263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4441132 + ... + 4460420.

It is an arithmetic number, because the mean of its divisors is an integer number (1911446100).

Almost surely, 2^85851018264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85851018264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122332550400).

85851018264 is an abundant number, since it is smaller than the sum of its proper divisors (158814082536).

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

85851018264 is a wasteful number, since it uses less digits than its factorization.

85851018264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20065 (or 20061 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 48.

The spelling of 85851018264 in words is "eighty-five billion, eight hundred fifty-one million, eighteen thousand, two hundred sixty-four".