7643219008 has 56 divisors (see below), whose sum is σ = 15389827488. Its totient is φ = 3765712896.

The previous prime is 7643218991. The next prime is 7643219011. The reversal of 7643219008 is 8009123467.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2298435 + ... + 2301757.

It is an arithmetic number, because the mean of its divisors is an integer number (274818348).

Almost surely, 2^7643219008 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 7643219008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7694913744).

7643219008 is an abundant number, since it is smaller than the sum of its proper divisors (7746608480).

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

7643219008 is a wasteful number, since it uses less digits than its factorization.

7643219008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851 (or 3841 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 7643219008 is about 87425.5054775207. The cubic root of 7643219008 is about 1969.8149746778.

The spelling of 7643219008 in words is "seven billion, six hundred forty-three million, two hundred nineteen thousand, eight".