215242321035875 has 32 divisors (see below), whose sum is σ = 306999265622400. Its totient is φ = 147593668070400.

The previous prime is 215242321035829. The next prime is 215242321035919. The reversal of 215242321035875 is 578530123242512.

It is not a de Polignac number, because 215242321035875 - 2³⁸ = 214967443128931 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131564891 + ... + 133190859.

It is an arithmetic number, because the mean of its divisors is an integer number (9593727050700).

Almost surely, 2^{215242321035875} is an apocalyptic number.

215242321035875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

215242321035875 is a deficient number, since it is larger than the sum of its proper divisors (91756944586525).

215242321035875 is a wasteful number, since it uses less digits than its factorization.

215242321035875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777280 (or 1777270 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 215242321035875 in words is "two hundred fifteen trillion, two hundred forty-two billion, three hundred twenty-one million, thirty-five thousand, eight hundred seventy-five".