85491975930 has 32 divisors (see below), whose sum is σ = 212255942400. Its totient is φ = 22011726912.

The previous prime is 85491975887. The next prime is 85491975931. The reversal of 85491975930 is 3957919458.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85491975931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49132450 + ... + 49134189.

It is an arithmetic number, because the mean of its divisors is an integer number (6632998200).

Almost surely, 2^85491975930 is an apocalyptic number.

85491975930 is an abundant number, since it is smaller than the sum of its proper divisors (126763966470).

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

85491975930 is a wasteful number, since it uses less digits than its factorization.

85491975930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98266678.

The product of its (nonzero) digits is 12247200, while the sum is 60.

The spelling of 85491975930 in words is "eighty-five billion, four hundred ninety-one million, nine hundred seventy-five thousand, nine hundred thirty".