65815635852 has 36 divisors (see below), whose sum is σ = 166381520760. Its totient is φ = 21936670272.

The previous prime is 65815635829. The next prime is 65815635863. The reversal of 65815635852 is 25853651856.

65815635852 is a `hidden beast` number, since 6 + 5 + 8 + 1 + 56 + 3 + 585 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386848 + ... + 530360.

It is an arithmetic number, because the mean of its divisors is an integer number (4621708910).

Almost surely, 2^65815635852 is an apocalyptic number.

It is an amenable number.

65815635852 is an abundant number, since it is smaller than the sum of its proper divisors (100565884908).

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

65815635852 is a wasteful number, since it uses less digits than its factorization.

65815635852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156262 (or 156257 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 54.

The spelling of 65815635852 in words is "sixty-five billion, eight hundred fifteen million, six hundred thirty-five thousand, eight hundred fifty-two".