66464002032 has 40 divisors (see below), whose sum is σ = 172933931520. Its totient is φ = 21995279040.

The previous prime is 66464002001. The next prime is 66464002057. The reversal of 66464002032 is 23020046466.

It is a super-2 number, since 2×66464002032² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66464001984 and 66464002002.

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, 4974144 + ... + 4987487.

It is an arithmetic number, because the mean of its divisors is an integer number (4323348288).

Almost surely, 2^66464002032 is an apocalyptic number.

It is an amenable number.

66464002032 is an abundant number, since it is smaller than the sum of its proper divisors (106469929488).

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

66464002032 is a wasteful number, since it uses less digits than its factorization.

66464002032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961781 (or 9961775 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 66464002032 its reverse (23020046466), we get a palindrome (89484048498).

The spelling of 66464002032 in words is "sixty-six billion, four hundred sixty-four million, two thousand, thirty-two".