66762648830 has 32 divisors (see below), whose sum is σ = 123050409984. Its totient is φ = 26068554016.

The previous prime is 66762648817. The next prime is 66762648839. The reversal of 66762648830 is 3884626766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66762648839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5432 + ... + 365451.

It is an arithmetic number, because the mean of its divisors is an integer number (3845325312).

Almost surely, 2^66762648830 is an apocalyptic number.

66762648830 is a deficient number, since it is larger than the sum of its proper divisors (56287761154).

66762648830 is a wasteful number, since it uses less digits than its factorization.

66762648830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371320.

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 66762648830 in words is "sixty-six billion, seven hundred sixty-two million, six hundred forty-eight thousand, eight hundred thirty".