6531246648066 has 32 divisors (see below), whose sum is σ = 15806714578560. Its totient is φ = 1756301619456.

The previous prime is 6531246648019. The next prime is 6531246648067. The reversal of 6531246648066 is 6608466421356.

It is a junction number, because it is equal to n+sod(n) for n = 6531246647997 and 6531246648015.

It is not an unprimeable number, because it can be changed into a prime (6531246648067) 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, 4573701421 + ... + 4573702848.

It is an arithmetic number, because the mean of its divisors is an integer number (493959830580).

Almost surely, 2^{6531246648066} is an apocalyptic number.

6531246648066 is an abundant number, since it is smaller than the sum of its proper divisors (9275467930494).

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

6531246648066 is a wasteful number, since it uses less digits than its factorization.

6531246648066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9147404298.

The product of its (nonzero) digits is 29859840, while the sum is 57.

The spelling of 6531246648066 in words is "six trillion, five hundred thirty-one billion, two hundred forty-six million, six hundred forty-eight thousand, sixty-six".