651311660325 has 48 divisors (see below), whose sum is σ = 1126838413440. Its totient is φ = 331321774080.

The previous prime is 651311660249. The next prime is 651311660333. The reversal of 651311660325 is 523066113156.

It is not a de Polignac number, because 651311660325 - 2⁹ = 651311659813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74121 + ... + 1143729.

It is an arithmetic number, because the mean of its divisors is an integer number (23475800280).

Almost surely, 2^651311660325 is an apocalyptic number.

It is an amenable number.

651311660325 is a deficient number, since it is larger than the sum of its proper divisors (475526753115).

651311660325 is a wasteful number, since it uses less digits than its factorization.

651311660325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069998 (or 1069993 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 651311660325 in words is "six hundred fifty-one billion, three hundred eleven million, six hundred sixty thousand, three hundred twenty-five".