215534132255505 has 32 divisors (see below), whose sum is σ = 394120561241088. Its totient is φ = 98529637752000.

The previous prime is 215534132255411. The next prime is 215534132255513. The reversal of 215534132255505 is 505552231435512.

It is not a de Polignac number, because 215534132255505 - 2²⁷ = 215533998037777 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 42423730 + ... + 47231780.

It is an arithmetic number, because the mean of its divisors is an integer number (12316267538784).

Almost surely, 2^{215534132255505} is an apocalyptic number.

It is an amenable number.

215534132255505 is a deficient number, since it is larger than the sum of its proper divisors (178586428985583).

215534132255505 is a wasteful number, since it uses less digits than its factorization.

215534132255505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234997.

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 215534132255505 in words is "two hundred fifteen trillion, five hundred thirty-four billion, one hundred thirty-two million, two hundred fifty-five thousand, five hundred five".