628620729453 has 16 divisors (see below), whose sum is σ = 931543804800. Its totient is φ = 418966260480.

The previous prime is 628620729397. The next prime is 628620729479. The reversal of 628620729453 is 354927026826.

628620729453 is a `hidden beast` number, since 6 + 2 + 8 + 620 + 7 + 2 + 9 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 628620729453 - 2¹⁸ = 628620467309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628620729453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628620729553) 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, 3071988 + ... + 3270221.

It is an arithmetic number, because the mean of its divisors is an integer number (58221487800).

Almost surely, 2^628620729453 is an apocalyptic number.

It is an amenable number.

628620729453 is a deficient number, since it is larger than the sum of its proper divisors (302923075347).

628620729453 is a wasteful number, since it uses less digits than its factorization.

628620729453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6345889 (or 6345883 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 628620729453 in words is "six hundred twenty-eight billion, six hundred twenty million, seven hundred twenty-nine thousand, four hundred fifty-three".