628344965787 has 32 divisors (see below), whose sum is σ = 1099496325120. Its totient is φ = 309233337120.

The previous prime is 628344965779. The next prime is 628344965813. The reversal of 628344965787 is 787569443826.

It is not a de Polignac number, because 628344965787 - 2³ = 628344965779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628344965737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71577403 + ... + 71586180.

It is an arithmetic number, because the mean of its divisors is an integer number (34359260160).

Almost surely, 2^628344965787 is an apocalyptic number.

628344965787 is a deficient number, since it is larger than the sum of its proper divisors (471151359333).

628344965787 is a wasteful number, since it uses less digits than its factorization.

628344965787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143163623.

The product of its digits is 487710720, while the sum is 69.

The spelling of 628344965787 in words is "six hundred twenty-eight billion, three hundred forty-four million, nine hundred sixty-five thousand, seven hundred eighty-seven".