6639506447352 has 64 divisors (see below), whose sum is σ = 16634685312000. Its totient is φ = 2208384468864.

The previous prime is 6639506447351. The next prime is 6639506447443. The reversal of 6639506447352 is 2537446059366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6639506447351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21764049 + ... + 22067007.

It is an arithmetic number, because the mean of its divisors is an integer number (259916958000).

Almost surely, 2^{6639506447352} is an apocalyptic number.

It is an amenable number.

6639506447352 is an abundant number, since it is smaller than the sum of its proper divisors (9995178864648).

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

6639506447352 is a wasteful number, since it uses less digits than its factorization.

6639506447352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304940 (or 304936 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 60.

The spelling of 6639506447352 in words is "six trillion, six hundred thirty-nine billion, five hundred six million, four hundred forty-seven thousand, three hundred fifty-two".