66672518802 has 16 divisors (see below), whose sum is σ = 133389359712. Its totient is φ = 22216785920.

The previous prime is 66672518791. The next prime is 66672518819. The reversal of 66672518802 is 20881527666.

It is a happy 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, 1827183 + ... + 1863314.

It is an arithmetic number, because the mean of its divisors is an integer number (8336834982).

Almost surely, 2^66672518802 is an apocalyptic number.

66672518802 is an abundant number, since it is smaller than the sum of its proper divisors (66716840910).

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

66672518802 is a wasteful number, since it uses less digits than its factorization.

66672518802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693513.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 66672518802 in words is "sixty-six billion, six hundred seventy-two million, five hundred eighteen thousand, eight hundred two".