66223707293 has 8 divisors (see below), whose sum is σ = 67851220416. Its totient is φ = 64596780000.

The previous prime is 66223707289. The next prime is 66223707353. The reversal of 66223707293 is 39270732266.

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 66223707293 - 2² = 66223707289 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 (66223707493) 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, 86918 + ... + 374168.

It is an arithmetic number, because the mean of its divisors is an integer number (8481402552).

Almost surely, 2^66223707293 is an apocalyptic number.

It is an amenable number.

66223707293 is a deficient number, since it is larger than the sum of its proper divisors (1627513123).

66223707293 is a wasteful number, since it uses less digits than its factorization.

66223707293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292915.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 66223707293 in words is "sixty-six billion, two hundred twenty-three million, seven hundred seven thousand, two hundred ninety-three".