627665465376551 has 12 divisors (see below), whose sum is σ = 731024339407848. Its totient is φ = 537348427397712.

The previous prime is 627665465376517. The next prime is 627665465376563. The reversal of 627665465376551 is 155673564566726.

It is a de Polignac number, because none of the positive numbers 2^k-627665465376551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627665465376571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7744517696 + ... + 7744598741.

It is an arithmetic number, because the mean of its divisors is an integer number (60918694950654).

Almost surely, 2^{627665465376551} is an apocalyptic number.

627665465376551 is a deficient number, since it is larger than the sum of its proper divisors (103358874031297).

627665465376551 is a wasteful number, since it uses less digits than its factorization.

627665465376551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15489117278 (or 15489117271 counting only the distinct ones).

The product of its digits is 5715360000, while the sum is 74.

The spelling of 627665465376551 in words is "six hundred twenty-seven trillion, six hundred sixty-five billion, four hundred sixty-five million, three hundred seventy-six thousand, five hundred fifty-one".