655550505515 has 8 divisors (see below), whose sum is σ = 828063796560. Its totient is φ = 496838277792.

The previous prime is 655550505509. The next prime is 655550505517. The reversal of 655550505515 is 515505055556.

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 655550505515 - 2²⁶ = 655483396651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655550505515.

It is not an unprimeable number, because it can be changed into a prime (655550505517) 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, 3450265724 + ... + 3450265913.

It is an arithmetic number, because the mean of its divisors is an integer number (103507974570).

Almost surely, 2^655550505515 is an apocalyptic number.

655550505515 is a deficient number, since it is larger than the sum of its proper divisors (172513291045).

655550505515 is a wasteful number, since it uses less digits than its factorization.

655550505515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900531661.

The product of its (nonzero) digits is 2343750, while the sum is 47.

The spelling of 655550505515 in words is "six hundred fifty-five billion, five hundred fifty million, five hundred five thousand, five hundred fifteen".