628945687945 has 16 divisors (see below), whose sum is σ = 765224583552. Its totient is φ = 496203920640.

The previous prime is 628945687861. The next prime is 628945687957. The reversal of 628945687945 is 549786549826.

It is not a de Polignac number, because 628945687945 - 2⁷ = 628945687817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2409607 + ... + 2657836.

It is an arithmetic number, because the mean of its divisors is an integer number (47826536472).

Almost surely, 2^628945687945 is an apocalyptic number.

It is an amenable number.

628945687945 is a deficient number, since it is larger than the sum of its proper divisors (136278895607).

628945687945 is a wasteful number, since it uses less digits than its factorization.

628945687945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067792.

The product of its digits is 1045094400, while the sum is 73.

The spelling of 628945687945 in words is "six hundred twenty-eight billion, nine hundred forty-five million, six hundred eighty-seven thousand, nine hundred forty-five".