628542085520 has 20 divisors (see below), whose sum is σ = 1461360349020. Its totient is φ = 251416834176.

The previous prime is 628542085463. The next prime is 628542085579. The reversal of 628542085520 is 25580245826.

It can be written as a sum of positive squares in 2 ways, for example, as 193111029136 + 435431056384 = 439444^2 + 659872^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3928387955 + ... + 3928388114.

It is an arithmetic number, because the mean of its divisors is an integer number (73068017451).

Almost surely, 2^628542085520 is an apocalyptic number.

It is an amenable number.

628542085520 is an abundant number, since it is smaller than the sum of its proper divisors (832818263500).

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

628542085520 is a wasteful number, since it uses less digits than its factorization.

628542085520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856776082 (or 7856776076 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 47.

The spelling of 628542085520 in words is "six hundred twenty-eight billion, five hundred forty-two million, eighty-five thousand, five hundred twenty".