628755511253 has 4 divisors (see below), whose sum is σ = 665741129580. Its totient is φ = 591769892928.

The previous prime is 628755511229. The next prime is 628755511259. The reversal of 628755511253 is 352115557826.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 357499955569 + 271255555684 = 597913^2 + 520822^2 .

It is a cyclic number.

It is not a de Polignac number, because 628755511253 - 2³² = 624460543957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628755511259) 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, 18492809138 + ... + 18492809171.

It is an arithmetic number, because the mean of its divisors is an integer number (166435282395).

Almost surely, 2^628755511253 is an apocalyptic number.

It is an amenable number.

628755511253 is a deficient number, since it is larger than the sum of its proper divisors (36985618327).

628755511253 is a wasteful number, since it uses less digits than its factorization.

628755511253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36985618326.

The product of its digits is 2520000, while the sum is 50.

The spelling of 628755511253 in words is "six hundred twenty-eight billion, seven hundred fifty-five million, five hundred eleven thousand, two hundred fifty-three".