628813473556 has 12 divisors (see below), whose sum is σ = 1119074826240. Its totient is φ = 309077808920.

The previous prime is 628813473529. The next prime is 628813473559. The reversal of 628813473556 is 655374318826.

It is a happy number.

It is a super-2 number, since 2×628813473556² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 628813473556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628813473559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332231700 + ... + 1332232171.

It is an arithmetic number, because the mean of its divisors is an integer number (93256235520).

Almost surely, 2^628813473556 is an apocalyptic number.

It is an amenable number.

628813473556 is a deficient number, since it is larger than the sum of its proper divisors (490261352684).

628813473556 is a wasteful number, since it uses less digits than its factorization.

628813473556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664463934 (or 2664463932 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 58.

The spelling of 628813473556 in words is "six hundred twenty-eight billion, eight hundred thirteen million, four hundred seventy-three thousand, five hundred fifty-six".