628811381875 has 20 divisors (see below), whose sum is σ = 811109911744. Its totient is φ = 486821700000.

The previous prime is 628811381873. The next prime is 628811381897. The reversal of 628811381875 is 578183118826.

It is not a de Polignac number, because 628811381875 - 2¹ = 628811381873 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628811381873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16208016 + ... + 16246765.

Almost surely, 2^628811381875 is an apocalyptic number.

628811381875 is a deficient number, since it is larger than the sum of its proper divisors (182298529869).

628811381875 is an equidigital number, since it uses as much as digits as its factorization.

628811381875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32454832 (or 32454817 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 58.

The spelling of 628811381875 in words is "six hundred twenty-eight billion, eight hundred eleven million, three hundred eighty-one thousand, eight hundred seventy-five".