651123005180 has 24 divisors (see below), whose sum is σ = 1414508598720. Its totient is φ = 251468194880.

The previous prime is 651123005161. The next prime is 651123005191. The reversal of 651123005180 is 81500321156.

It is a super-2 number, since 2×651123005180² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 561312356 + ... + 561313515.

It is an arithmetic number, because the mean of its divisors is an integer number (58937858280).

Almost surely, 2^651123005180 is an apocalyptic number.

It is an amenable number.

651123005180 is an abundant number, since it is smaller than the sum of its proper divisors (763385593540).

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

651123005180 is a wasteful number, since it uses less digits than its factorization.

651123005180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122625909 (or 1122625907 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 651123005180 in words is "six hundred fifty-one billion, one hundred twenty-three million, five thousand, one hundred eighty".