215455220411533 has 16 divisors (see below), whose sum is σ = 216220021263360. Its totient is φ = 214691689036800.

The previous prime is 215455220411467. The next prime is 215455220411537. The reversal of 215455220411533 is 335114022554512.

215455220411533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215455220411533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215455220411533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215455220411537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7057380013 + ... + 7057410541.

It is an arithmetic number, because the mean of its divisors is an integer number (13513751328960).

Almost surely, 2^{215455220411533} is an apocalyptic number.

It is an amenable number.

215455220411533 is a deficient number, since it is larger than the sum of its proper divisors (764800851827).

215455220411533 is a wasteful number, since it uses less digits than its factorization.

215455220411533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50508.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 215455220411533 in words is "two hundred fifteen trillion, four hundred fifty-five billion, two hundred twenty million, four hundred eleven thousand, five hundred thirty-three".