651123506324 has 6 divisors (see below), whose sum is σ = 1139466136074. Its totient is φ = 325561753160.

The previous prime is 651123506323. The next prime is 651123506353. The reversal of 651123506324 is 423605321156.

It can be written as a sum of positive squares in only one way, i.e., 591822490000 + 59301016324 = 769300^2 + 243518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651123506321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81390438287 + ... + 81390438294.

It is an arithmetic number, because the mean of its divisors is an integer number (189911022679).

Almost surely, 2^651123506324 is an apocalyptic number.

It is an amenable number.

651123506324 is a deficient number, since it is larger than the sum of its proper divisors (488342629750).

651123506324 is a wasteful number, since it uses less digits than its factorization.

651123506324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162780876585 (or 162780876583 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 651123506324 in words is "six hundred fifty-one billion, one hundred twenty-three million, five hundred six thousand, three hundred twenty-four".