219538077164427 has 72 divisors (see below), whose sum is σ = 370965421412352. Its totient is φ = 115013883852000.

The previous prime is 219538077164369. The next prime is 219538077164437. The reversal of 219538077164427 is 724461770835912.

It is a happy number.

219538077164427 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 219538077164427 - 2⁷ = 219538077164299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (219538077164437) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65080699 + ... + 68370852.

It is an arithmetic number, because the mean of its divisors is an integer number (5152297519616).

It is a 2-persistent number, because it is pandigital, and so is 2⋅219538077164427 = 439076154328854, but 3⋅219538077164427 = 658614231493281 is not.

Almost surely, 2^{219538077164427} is an apocalyptic number.

219538077164427 is a deficient number, since it is larger than the sum of its proper divisors (151427344247925).

219538077164427 is a wasteful number, since it uses less digits than its factorization.

219538077164427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133451637 (or 133451611 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 66.

The spelling of 219538077164427 in words is "two hundred nineteen trillion, five hundred thirty-eight billion, seventy-seven million, one hundred sixty-four thousand, four hundred twenty-seven".