66503980933 has 8 divisors (see below), whose sum is σ = 71935180128. Its totient is φ = 61117854384.

The previous prime is 66503980891. The next prime is 66503980951. The reversal of 66503980933 is 33908930566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66503980933 - 2¹³ = 66503972741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66503980973) 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 7 ways as a sum of consecutive naturals, for example, 11265091 + ... + 11270992.

It is an arithmetic number, because the mean of its divisors is an integer number (8991897516).

Almost surely, 2^66503980933 is an apocalyptic number.

It is an amenable number.

66503980933 is a deficient number, since it is larger than the sum of its proper divisors (5431199195).

66503980933 is a wasteful number, since it uses less digits than its factorization.

66503980933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22536323.

The product of its (nonzero) digits is 3149280, while the sum is 52.

The spelling of 66503980933 in words is "sixty-six billion, five hundred three million, nine hundred eighty thousand, nine hundred thirty-three".