66034500636 has 24 divisors (see below), whose sum is σ = 165932848144. Its totient is φ = 20318307840.

The previous prime is 66034500607. The next prime is 66034500683. The reversal of 66034500636 is 63600543066.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 66034500594 and 66034500603.

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, 211648885 + ... + 211649196.

Almost surely, 2^66034500636 is an apocalyptic number.

It is an amenable number.

66034500636 is an abundant number, since it is smaller than the sum of its proper divisors (99898347508).

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

66034500636 is a wasteful number, since it uses less digits than its factorization.

66034500636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423298101 (or 423298099 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 66034500636 in words is "sixty-six billion, thirty-four million, five hundred thousand, six hundred thirty-six".