628149195648 has 512 divisors, whose sum is σ = 2048834995200. Its totient is φ = 188266291200.

The previous prime is 628149195631. The next prime is 628149195671. The reversal of 628149195648 is 846591941826.

628149195648 is a `hidden beast` number, since 6 + 2 + 81 + 491 + 9 + 5 + 64 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 359557911 + ... + 359559657.

It is an arithmetic number, because the mean of its divisors is an integer number (4001630850).

Almost surely, 2^628149195648 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 628149195648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024417497600).

628149195648 is an abundant number, since it is smaller than the sum of its proper divisors (1420685799552).

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

628149195648 is a wasteful number, since it uses less digits than its factorization.

628149195648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1969 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 628149195648 in words is "six hundred twenty-eight billion, one hundred forty-nine million, one hundred ninety-five thousand, six hundred forty-eight".