628517630881 has 8 divisors (see below), whose sum is σ = 719262335744. Its totient is φ = 538012044000.

The previous prime is 628517630869. The next prime is 628517630971. The reversal of 628517630881 is 188036715826.

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

It is a cyclic number.

It is not a de Polignac number, because 628517630881 - 2¹⁵ = 628517598113 is a prime.

It is a super-2 number, since 2×628517630881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628517630581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59773860 + ... + 59784373.

It is an arithmetic number, because the mean of its divisors is an integer number (89907791968).

Almost surely, 2^628517630881 is an apocalyptic number.

It is an amenable number.

628517630881 is a deficient number, since it is larger than the sum of its proper divisors (90744704863).

628517630881 is a wasteful number, since it uses less digits than its factorization.

628517630881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119558991.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 628517630881 in words is "six hundred twenty-eight billion, five hundred seventeen million, six hundred thirty thousand, eight hundred eighty-one".