628501045544 has 16 divisors (see below), whose sum is σ = 1178453466900. Its totient is φ = 314246787712.

The previous prime is 628501045531. The next prime is 628501045547. The reversal of 628501045544 is 445540105826.

It can be written as a sum of positive squares in 2 ways, for example, as 627679076644 + 821968900 = 792262^2 + 28670^2 .

It is a junction number, because it is equal to n+sod(n) for n = 628501045495 and 628501045504.

It is not an unprimeable number, because it can be changed into a prime (628501045547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327842 + ... + 1168110.

Almost surely, 2^628501045544 is an apocalyptic number.

It is an amenable number.

628501045544 is a deficient number, since it is larger than the sum of its proper divisors (549952421356).

628501045544 is a wasteful number, since it uses less digits than its factorization.

628501045544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933772 (or 933768 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 44.

The spelling of 628501045544 in words is "six hundred twenty-eight billion, five hundred one million, forty-five thousand, five hundred forty-four".