66848535852 has 48 divisors (see below), whose sum is σ = 178308587520. Its totient is φ = 19094671872.

The previous prime is 66848535839. The next prime is 66848535899. The reversal of 66848535852 is 25853584866.

It is a happy number.

It is a super-2 number, since 2×66848535852² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232924 + ... + 433532.

It is an arithmetic number, because the mean of its divisors is an integer number (3714762240).

Almost surely, 2^66848535852 is an apocalyptic number.

It is an amenable number.

66848535852 is an abundant number, since it is smaller than the sum of its proper divisors (111460051668).

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

66848535852 is a wasteful number, since it uses less digits than its factorization.

66848535852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204590 (or 204588 counting only the distinct ones).

The product of its digits is 55296000, while the sum is 60.

The spelling of 66848535852 in words is "sixty-six billion, eight hundred forty-eight million, five hundred thirty-five thousand, eight hundred fifty-two".