6665156352 has 108 divisors (see below), whose sum is σ = 19315186800. Its totient is φ = 2210402304.

The previous prime is 6665156327. The next prime is 6665156353. The reversal of 6665156352 is 2536515666.

It is a junction number, because it is equal to n+sod(n) for n = 6665156298 and 6665156307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665156353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451228 + ... + 465764.

Almost surely, 2^6665156352 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 6665156352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9657593400).

6665156352 is an abundant number, since it is smaller than the sum of its proper divisors (12650030448).

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

6665156352 is a wasteful number, since it uses less digits than its factorization.

6665156352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14758 (or 14741 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 6665156352 is about 81640.4088181827. The cubic root of 6665156352 is about 1881.9299209763.

The spelling of 6665156352 in words is "six billion, six hundred sixty-five million, one hundred fifty-six thousand, three hundred fifty-two".