85820253650 has 12 divisors (see below), whose sum is σ = 159625671882. Its totient is φ = 34328101440.

The previous prime is 85820253647. The next prime is 85820253691. The reversal of 85820253650 is 5635202858.

It can be written as a sum of positive squares in 3 ways, for example, as 54455489449 + 31364764201 = 233357^2 + 177101^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 858202487 + ... + 858202586.

Almost surely, 2^85820253650 is an apocalyptic number.

85820253650 is a deficient number, since it is larger than the sum of its proper divisors (73805418232).

85820253650 is a wasteful number, since it uses less digits than its factorization.

85820253650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716405085 (or 1716405080 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 85820253650 in words is "eighty-five billion, eight hundred twenty million, two hundred fifty-three thousand, six hundred fifty".