651631748488 has 64 divisors (see below), whose sum is σ = 1427458896000. Its totient is φ = 278759557440.

The previous prime is 651631748461. The next prime is 651631748501. The reversal of 651631748488 is 884847136156.

It is a super-2 number, since 2×651631748488² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1283898 + ... + 1718038.

It is an arithmetic number, because the mean of its divisors is an integer number (22304045250).

Almost surely, 2^651631748488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651631748488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713729448000).

651631748488 is an abundant number, since it is smaller than the sum of its proper divisors (775827147512).

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

651631748488 is a wasteful number, since it uses less digits than its factorization.

651631748488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434715 (or 434697 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 651631748488 in words is "six hundred fifty-one billion, six hundred thirty-one million, seven hundred forty-eight thousand, four hundred eighty-eight".