219435056084421 has 32 divisors (see below), whose sum is σ = 332578589414400. Its totient is φ = 142949404067760.

The previous prime is 219435056084347. The next prime is 219435056084593. The reversal of 219435056084421 is 124480650534912.

219435056084421 is a `hidden beast` number, since 2 + 1 + 9 + 4 + 3 + 5 + 0 + 5 + 608 + 4 + 4 + 21 = 666.

219435056084421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 219435056084421 - 2¹¹ = 219435056082373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219435056084921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412157815 + ... + 412689876.

It is an arithmetic number, because the mean of its divisors is an integer number (10393080919200).

Almost surely, 2^{219435056084421} is an apocalyptic number.

It is an amenable number.

219435056084421 is a deficient number, since it is larger than the sum of its proper divisors (113143533329979).

219435056084421 is a wasteful number, since it uses less digits than its factorization.

219435056084421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824847926 (or 824847920 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 219435056084421 in words is "two hundred nineteen trillion, four hundred thirty-five billion, fifty-six million, eighty-four thousand, four hundred twenty-one".