181362452136 has 32 divisors (see below), whose sum is σ = 453523190400. Its totient is φ = 60438542720.

The previous prime is 181362452101. The next prime is 181362452137. The reversal of 181362452136 is 631254263181.

It is not an unprimeable number, because it can be changed into a prime (181362452137) 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 7 ways as a sum of consecutive naturals, for example, 880416 + ... + 1066703.

It is an arithmetic number, because the mean of its divisors is an integer number (14172599700).

Almost surely, 2^181362452136 is an apocalyptic number.

It is an amenable number.

181362452136 is an abundant number, since it is smaller than the sum of its proper divisors (272160738264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181362452136 is a wasteful number, since it uses less digits than its factorization.

181362452136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951009 (or 1951005 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The spelling of 181362452136 in words is "one hundred eighty-one billion, three hundred sixty-two million, four hundred fifty-two thousand, one hundred thirty-six".