660135245245 has 32 divisors (see below), whose sum is σ = 917955493632. Its totient is φ = 446353638912.

The previous prime is 660135245243. The next prime is 660135245267. The reversal of 660135245245 is 542542531066.

It is a cyclic number.

It is not a de Polignac number, because 660135245245 - 2¹ = 660135245243 is a prime.

It is a super-2 number, since 2×660135245245² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660135245243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11143474 + ... + 11202556.

It is an arithmetic number, because the mean of its divisors is an integer number (28686109176).

Almost surely, 2^660135245245 is an apocalyptic number.

It is an amenable number.

660135245245 is a deficient number, since it is larger than the sum of its proper divisors (257820248387).

660135245245 is a wasteful number, since it uses less digits than its factorization.

660135245245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63541.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 660135245245 in words is "six hundred sixty billion, one hundred thirty-five million, two hundred forty-five thousand, two hundred forty-five".