628491519656 has 512 divisors, whose sum is σ = 1683690624000. Its totient is φ = 216543559680.

The previous prime is 628491519637. The next prime is 628491519661. The reversal of 628491519656 is 656915194826.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1059850496 + ... + 1059851088.

It is an arithmetic number, because the mean of its divisors is an integer number (3288458250).

Almost surely, 2^628491519656 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 628491519656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (841845312000).

628491519656 is an abundant number, since it is smaller than the sum of its proper divisors (1055199104344).

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

628491519656 is a wasteful number, since it uses less digits than its factorization.

628491519656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 736 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 62.

The spelling of 628491519656 in words is "six hundred twenty-eight billion, four hundred ninety-one million, five hundred nineteen thousand, six hundred fifty-six".