660392521233 has 8 divisors (see below), whose sum is σ = 880580500128. Its totient is φ = 440233111584.

The previous prime is 660392521219. The next prime is 660392521241. The reversal of 660392521233 is 332125293066.

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

It is not a de Polignac number, because 660392521233 - 2¹³ = 660392513041 is a prime.

It is a super-2 number, since 2×660392521233² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (660392521213) 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, 7088316 + ... + 7180877.

It is an arithmetic number, because the mean of its divisors is an integer number (110072562516).

Almost surely, 2^660392521233 is an apocalyptic number.

It is an amenable number.

660392521233 is a deficient number, since it is larger than the sum of its proper divisors (220187978895).

660392521233 is a wasteful number, since it uses less digits than its factorization.

660392521233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14284623.

The product of its (nonzero) digits is 349920, while the sum is 42.

The spelling of 660392521233 in words is "six hundred sixty billion, three hundred ninety-two million, five hundred twenty-one thousand, two hundred thirty-three".