628134329761 has 8 divisors (see below), whose sum is σ = 637386867648. Its totient is φ = 618893058000.

The previous prime is 628134329747. The next prime is 628134329813. The reversal of 628134329761 is 167923431826.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628134329761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628134329699 and 628134329708.

It is not an unprimeable number, because it can be changed into a prime (628134329741) 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, 2704170 + ... + 2927251.

It is an arithmetic number, because the mean of its divisors is an integer number (79673358456).

Almost surely, 2^628134329761 is an apocalyptic number.

It is an amenable number.

628134329761 is a deficient number, since it is larger than the sum of its proper divisors (9252537887).

628134329761 is a wasteful number, since it uses less digits than its factorization.

628134329761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633063.

The product of its digits is 2612736, while the sum is 52.

The spelling of 628134329761 in words is "six hundred twenty-eight billion, one hundred thirty-four million, three hundred twenty-nine thousand, seven hundred sixty-one".