4671326640 has 120 divisors (see below), whose sum is σ = 15383278800. Its totient is φ = 1172393984.

The previous prime is 4671326609. The next prime is 4671326651. The reversal of 4671326640 is 466231764.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35686 + ... + 103034.

It is an arithmetic number, because the mean of its divisors is an integer number (128193990).

Almost surely, 2^4671326640 is an apocalyptic number.

4671326640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4671326640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7691639400).

4671326640 is an abundant number, since it is smaller than the sum of its proper divisors (10711952160).

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

4671326640 is a wasteful number, since it uses less digits than its factorization.

4671326640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67399 (or 67376 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 4671326640 is about 68347.1041083673. The cubic root of 4671326640 is about 1671.6553607713.

The spelling of 4671326640 in words is "four billion, six hundred seventy-one million, three hundred twenty-six thousand, six hundred forty".