628944811854 has 32 divisors (see below), whose sum is σ = 1267671119616. Its totient is φ = 208018474560.

The previous prime is 628944811853. The next prime is 628944811867. The reversal of 628944811854 is 458118449826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628944811853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5902719 + ... + 6008325.

It is an arithmetic number, because the mean of its divisors is an integer number (39614722488).

Almost surely, 2^628944811854 is an apocalyptic number.

628944811854 is an abundant number, since it is smaller than the sum of its proper divisors (638726307762).

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

628944811854 is a wasteful number, since it uses less digits than its factorization.

628944811854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113320.

The product of its digits is 17694720, while the sum is 60.

The spelling of 628944811854 in words is "six hundred twenty-eight billion, nine hundred forty-four million, eight hundred eleven thousand, eight hundred fifty-four".