66976610133 has 4 divisors (see below), whose sum is σ = 89302146848. Its totient is φ = 44651073420.

The previous prime is 66976610131. The next prime is 66976610159. The reversal of 66976610133 is 33101667966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66976610133 - 2¹ = 66976610131 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 (66976610131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11162768353 + ... + 11162768358.

It is an arithmetic number, because the mean of its divisors is an integer number (22325536712).

Almost surely, 2^66976610133 is an apocalyptic number.

It is an amenable number.

66976610133 is a deficient number, since it is larger than the sum of its proper divisors (22325536715).

66976610133 is a wasteful number, since it uses less digits than its factorization.

66976610133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22325536714.

The product of its (nonzero) digits is 734832, while the sum is 48.

The spelling of 66976610133 in words is "sixty-six billion, nine hundred seventy-six million, six hundred ten thousand, one hundred thirty-three".