628616616826 has 16 divisors (see below), whose sum is σ = 1028813371488. Its totient is φ = 285688159600.

The previous prime is 628616616809. The next prime is 628616616829.

628616616826 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×628616616826² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (628616616829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195365 + ... + 2465128.

It is an arithmetic number, because the mean of its divisors is an integer number (64300835718).

Almost surely, 2^628616616826 is an apocalyptic number.

628616616826 is a deficient number, since it is larger than the sum of its proper divisors (400196754662).

628616616826 is a wasteful number, since it uses less digits than its factorization.

628616616826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666637.

The product of its digits is 11943936, while the sum is 58.

The spelling of 628616616826 in words is "six hundred twenty-eight billion, six hundred sixteen million, six hundred sixteen thousand, eight hundred twenty-six".