66312232010532 has 144 divisors (see below), whose sum is σ = 172763192189952. Its totient is φ = 21432838901760.

The previous prime is 66312232010471. The next prime is 66312232010567. The reversal of 66312232010532 is 23501023221366.

66312232010532 is a `hidden beast` number, since 6 + 6 + 312 + 2 + 320 + 10 + 5 + 3 + 2 = 666.

It is a super-2 number, since 2×66312232010532² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2390219053 + ... + 2390246795.

It is an arithmetic number, because the mean of its divisors is an integer number (1199744390208).

Almost surely, 2^{66312232010532} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66312232010532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86381596094976).

66312232010532 is an abundant number, since it is smaller than the sum of its proper divisors (106450960179420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66312232010532 is a wasteful number, since it uses less digits than its factorization.

66312232010532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37658 (or 37653 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 66312232010532 its reverse (23501023221366), we get a palindrome (89813255231898).

The spelling of 66312232010532 in words is "sixty-six trillion, three hundred twelve billion, two hundred thirty-two million, ten thousand, five hundred thirty-two".