628581243381 has 64 divisors (see below), whose sum is σ = 1067628280320. Its totient is φ = 319964037120.

The previous prime is 628581243373. The next prime is 628581243397. The reversal of 628581243381 is 183342185826.

It is not a de Polignac number, because 628581243381 - 2³ = 628581243373 is a prime.

It is a super-2 number, since 2×628581243381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628581243181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16456201 + ... + 16494353.

It is an arithmetic number, because the mean of its divisors is an integer number (16681691880).

Almost surely, 2^628581243381 is an apocalyptic number.

It is an amenable number.

628581243381 is a deficient number, since it is larger than the sum of its proper divisors (439047036939).

628581243381 is a wasteful number, since it uses less digits than its factorization.

628581243381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40286.

The product of its digits is 2211840, while the sum is 51.

The spelling of 628581243381 in words is "six hundred twenty-eight billion, five hundred eighty-one million, two hundred forty-three thousand, three hundred eighty-one".