627115643561 has 4 divisors (see below), whose sum is σ = 684126156624. Its totient is φ = 570105130500.

The previous prime is 627115643521. The next prime is 627115643579. The reversal of 627115643561 is 165346511726.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 627115643561 - 2¹⁰ = 627115642537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (627115643521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28505256515 + ... + 28505256536.

It is an arithmetic number, because the mean of its divisors is an integer number (171031539156).

Almost surely, 2^627115643561 is an apocalyptic number.

It is an amenable number.

627115643561 is a deficient number, since it is larger than the sum of its proper divisors (57010513063).

627115643561 is a wasteful number, since it uses less digits than its factorization.

627115643561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57010513062.

The product of its digits is 907200, while the sum is 47.

The spelling of 627115643561 in words is "six hundred twenty-seven billion, one hundred fifteen million, six hundred forty-three thousand, five hundred sixty-one".