6520421685796 has 24 divisors (see below), whose sum is σ = 11517571590336. Its totient is φ = 3229687957920.

The previous prime is 6520421685793. The next prime is 6520421685839. The reversal of 6520421685796 is 6975861240256.

It is not an unprimeable number, because it can be changed into a prime (6520421685793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42246606 + ... + 42400666.

It is an arithmetic number, because the mean of its divisors is an integer number (479898816264).

Almost surely, 2^{6520421685796} is an apocalyptic number.

It is an amenable number.

6520421685796 is a deficient number, since it is larger than the sum of its proper divisors (4997149904540).

6520421685796 is a wasteful number, since it uses less digits than its factorization.

6520421685796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253059 (or 253057 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 6520421685796 in words is "six trillion, five hundred twenty billion, four hundred twenty-one million, six hundred eighty-five thousand, seven hundred ninety-six".