651006540066 has 16 divisors (see below), whose sum is σ = 1302027005664. Its totient is φ = 216999859104.

The previous prime is 651006540059. The next prime is 651006540089. The reversal of 651006540066 is 660045600156.

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, 86430 + ... + 1144326.

It is an arithmetic number, because the mean of its divisors is an integer number (81376687854).

Almost surely, 2^651006540066 is an apocalyptic number.

651006540066 is an abundant number, since it is smaller than the sum of its proper divisors (651020465598).

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

651006540066 is a wasteful number, since it uses less digits than its factorization.

651006540066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160465.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 651006540066 in words is "six hundred fifty-one billion, six million, five hundred forty thousand, sixty-six".