162558009381 has 32 divisors (see below), whose sum is σ = 225357753600. Its totient is φ = 104145440256.

The previous prime is 162558009353. The next prime is 162558009421. The reversal of 162558009381 is 183900855261.

It is a happy number.

It is not a de Polignac number, because 162558009381 - 2⁷ = 162558009253 is a prime.

It is a super-2 number, since 2×162558009381² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 162558009381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162558009311) by changing a digit.

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, 2999335 + ... + 3053051.

It is an arithmetic number, because the mean of its divisors is an integer number (7042429800).

Almost surely, 2^162558009381 is an apocalyptic number.

It is an amenable number.

162558009381 is a deficient number, since it is larger than the sum of its proper divisors (62799744219).

162558009381 is a wasteful number, since it uses less digits than its factorization.

162558009381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54093.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 162558009381 in words is "one hundred sixty-two billion, five hundred fifty-eight million, nine thousand, three hundred eighty-one".