66679348632 has 64 divisors (see below), whose sum is σ = 179788637280. Its totient is φ = 20486172672.

The previous prime is 66679348597. The next prime is 66679348711. The reversal of 66679348632 is 23684397666.

It is a happy number.

66679348632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66679348632² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 51198 + ... + 368754.

Almost surely, 2^66679348632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66679348632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89894318640).

66679348632 is an abundant number, since it is smaller than the sum of its proper divisors (113109288648).

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

66679348632 is a wasteful number, since it uses less digits than its factorization.

66679348632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318252 (or 318248 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 60.

The spelling of 66679348632 in words is "sixty-six billion, six hundred seventy-nine million, three hundred forty-eight thousand, six hundred thirty-two".