66043632624 has 80 divisors (see below), whose sum is σ = 179866321152. Its totient is φ = 20840269824.

The previous prime is 66043632583. The next prime is 66043632643. The reversal of 66043632624 is 42623634066.

66043632624 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 2×66043632624² (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, 201274 + ... + 415449.

Almost surely, 2^66043632624 is an apocalyptic number.

It is an amenable number.

66043632624 is an abundant number, since it is smaller than the sum of its proper divisors (113822688528).

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

66043632624 is a wasteful number, since it uses less digits than its factorization.

66043632624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616854 (or 616848 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 66043632624 in words is "sixty-six billion, forty-three million, six hundred thirty-two thousand, six hundred twenty-four".