85811031418578 has 64 divisors (see below), whose sum is σ = 183202827494400. Its totient is φ = 26716031737920.

The previous prime is 85811031418577. The next prime is 85811031418589. The reversal of 85811031418578 is 87581413011858.

It is a super-2 number, since 2×85811031418578² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85811031418573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 728554900 + ... + 728672672.

It is an arithmetic number, because the mean of its divisors is an integer number (2862544179600).

Almost surely, 2^{85811031418578} is an apocalyptic number.

85811031418578 is an abundant number, since it is smaller than the sum of its proper divisors (97391796075822).

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

85811031418578 is a wasteful number, since it uses less digits than its factorization.

85811031418578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207887.

The product of its (nonzero) digits is 8601600, while the sum is 60.

The spelling of 85811031418578 in words is "eighty-five trillion, eight hundred eleven billion, thirty-one million, four hundred eighteen thousand, five hundred seventy-eight".