6521389056008 has 32 divisors (see below), whose sum is σ = 12341430768960. Its totient is φ = 3230467064640.

The previous prime is 6521389055983. The next prime is 6521389056029. The reversal of 6521389056008 is 8006509831256.

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, 7474748 + ... + 8301483.

It is an arithmetic number, because the mean of its divisors is an integer number (385669711530).

Almost surely, 2^{6521389056008} is an apocalyptic number.

It is an amenable number.

6521389056008 is a deficient number, since it is larger than the sum of its proper divisors (5820041712952).

6521389056008 is a wasteful number, since it uses less digits than its factorization.

6521389056008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15776717 (or 15776713 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 6521389056008 in words is "six trillion, five hundred twenty-one billion, three hundred eighty-nine million, fifty-six thousand, eight".