85426965812 has 24 divisors (see below), whose sum is σ = 162151907400. Its totient is φ = 39220413440.

The previous prime is 85426965709. The next prime is 85426965973. The reversal of 85426965812 is 21856962458.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1705636 + 85425260176 = 1306^2 + 292276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15317687 + ... + 15323262.

It is an arithmetic number, because the mean of its divisors is an integer number (6756329475).

Almost surely, 2^85426965812 is an apocalyptic number.

85426965812 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

85426965812 is a deficient number, since it is larger than the sum of its proper divisors (76724941588).

85426965812 is a wasteful number, since it uses less digits than its factorization.

85426965812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30641011 (or 30641009 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 56.

The spelling of 85426965812 in words is "eighty-five billion, four hundred twenty-six million, nine hundred sixty-five thousand, eight hundred twelve".