655675617062563 has 4 divisors (see below), whose sum is σ = 666424397670208. Its totient is φ = 644926836454920.

The previous prime is 655675617062561. The next prime is 655675617062623. The reversal of 655675617062563 is 365260716576556.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 655675617062563 - 2¹ = 655675617062561 is a prime.

It is a super-2 number, since 2×655675617062563² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655675617062492 and 655675617062501.

It is not an unprimeable number, because it can be changed into a prime (655675617062561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5374390303731 + ... + 5374390303852.

It is an arithmetic number, because the mean of its divisors is an integer number (166606099417552).

Almost surely, 2^{655675617062563} is an apocalyptic number.

655675617062563 is a deficient number, since it is larger than the sum of its proper divisors (10748780607645).

655675617062563 is a wasteful number, since it uses less digits than its factorization.

655675617062563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10748780607644.

The product of its (nonzero) digits is 1428840000, while the sum is 70.

The spelling of 655675617062563 in words is "six hundred fifty-five trillion, six hundred seventy-five billion, six hundred seventeen million, sixty-two thousand, five hundred sixty-three".