651151106660 has 24 divisors (see below), whose sum is σ = 1380956113656. Its totient is φ = 257881625600.

The previous prime is 651151106659. The next prime is 651151106677. The reversal of 651151106660 is 66601151156.

It can be written as a sum of positive squares in 4 ways, for example, as 154475725156 + 496675381504 = 393034^2 + 704752^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161173997 + ... + 161178036.

It is an arithmetic number, because the mean of its divisors is an integer number (57539838069).

Almost surely, 2^651151106660 is an apocalyptic number.

It is an amenable number.

651151106660 is an abundant number, since it is smaller than the sum of its proper divisors (729805006996).

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

651151106660 is a wasteful number, since it uses less digits than its factorization.

651151106660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322352143 (or 322352141 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 651151106660 in words is "six hundred fifty-one billion, one hundred fifty-one million, one hundred six thousand, six hundred sixty".