660322275651 has 48 divisors (see below), whose sum is σ = 1026343921824. Its totient is φ = 407592041472.

The previous prime is 660322275631. The next prime is 660322275659. The reversal of 660322275651 is 156572223066.

660322275651 is a `hidden beast` number, since 6 + 6 + 0 + 322 + 275 + 6 + 51 = 666.

It is not a de Polignac number, because 660322275651 - 2¹³ = 660322267459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660322275597 and 660322275606.

It is not an unprimeable number, because it can be changed into a prime (660322275659) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 7717461 + ... + 7802553.

It is an arithmetic number, because the mean of its divisors is an integer number (21382165038).

Almost surely, 2^660322275651 is an apocalyptic number.

660322275651 is a deficient number, since it is larger than the sum of its proper divisors (366021646173).

660322275651 is a wasteful number, since it uses less digits than its factorization.

660322275651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85940 (or 85937 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 660322275651 in words is "six hundred sixty billion, three hundred twenty-two million, two hundred seventy-five thousand, six hundred fifty-one".