4155729664 has 72 divisors (see below), whose sum is σ = 8468046720. Its totient is φ = 2034859008.

The previous prime is 4155729661. The next prime is 4155729671. The reversal of 4155729664 is 4669275514.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155729661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7597039 + ... + 7597585.

It is an arithmetic number, because the mean of its divisors is an integer number (117611760).

Almost surely, 2^4155729664 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 4155729664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4234023360).

4155729664 is an abundant number, since it is smaller than the sum of its proper divisors (4312317056).

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

4155729664 is an equidigital number, since it uses as much as digits as its factorization.

4155729664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1111 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 49.

The square root of 4155729664 is about 64464.9491119011. The cubic root of 4155729664 is about 1607.7397993206.

The spelling of 4155729664 in words is "four billion, one hundred fifty-five million, seven hundred twenty-nine thousand, six hundred sixty-four".