66959672093 has 8 divisors (see below), whose sum is σ = 70078302528. Its totient is φ = 63858320064.

The previous prime is 66959672081. The next prime is 66959672099. The reversal of 66959672093 is 39027695966.

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 66959672093 - 2¹⁶ = 66959606557 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 (66959672099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4311671 + ... + 4327172.

It is an arithmetic number, because the mean of its divisors is an integer number (8759787816).

Almost surely, 2^66959672093 is an apocalyptic number.

It is an amenable number.

66959672093 is a deficient number, since it is larger than the sum of its proper divisors (3118630435).

66959672093 is a wasteful number, since it uses less digits than its factorization.

66959672093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8639203.

The product of its (nonzero) digits is 33067440, while the sum is 62.

The spelling of 66959672093 in words is "sixty-six billion, nine hundred fifty-nine million, six hundred seventy-two thousand, ninety-three".