66823412952 has 32 divisors (see below), whose sum is σ = 167077364400. Its totient is φ = 22271960064.

The previous prime is 66823412947. The next prime is 66823412969. The reversal of 66823412952 is 25921432866.

It is a happy number.

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, 66924 + ... + 371652.

Almost surely, 2^66823412952 is an apocalyptic number.

It is an amenable number.

66823412952 is an abundant number, since it is smaller than the sum of its proper divisors (100253951448).

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

66823412952 is a wasteful number, since it uses less digits than its factorization.

66823412952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313875 (or 313871 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

It can be divided in two parts, 668234 and 12952, that added together give a palindrome (681186).

The spelling of 66823412952 in words is "sixty-six billion, eight hundred twenty-three million, four hundred twelve thousand, nine hundred fifty-two".