515555516216045 has 32 divisors (see below), whose sum is σ = 640201496014080. Its totient is φ = 398315386022400.

The previous prime is 515555516216023. The next prime is 515555516216087. The reversal of 515555516216045 is 540612615555515.

It is a de Polignac number, because none of the positive numbers 2^k-515555516216045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541880 + ... + 32115489.

It is an arithmetic number, because the mean of its divisors is an integer number (20006296750440).

Almost surely, 2^{515555516216045} is an apocalyptic number.

It is an amenable number.

515555516216045 is a deficient number, since it is larger than the sum of its proper divisors (124645979798035).

515555516216045 is a wasteful number, since it uses less digits than its factorization.

515555516216045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32658245.

The product of its (nonzero) digits is 22500000, while the sum is 56.

The spelling of 515555516216045 in words is "five hundred fifteen trillion, five hundred fifty-five billion, five hundred sixteen million, two hundred sixteen thousand, forty-five".