136823531145 has 32 divisors (see below), whose sum is σ = 258262302720. Its totient is φ = 60530224320.

The previous prime is 136823531123. The next prime is 136823531147. The reversal of 136823531145 is 541135328631.

It is not a de Polignac number, because 136823531145 - 2¹⁶ = 136823465609 is a prime.

It is a super-2 number, since 2×136823531145² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136823531097 and 136823531106.

It is not an unprimeable number, because it can be changed into a prime (136823531147) 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, 21014185 + ... + 21020694.

It is an arithmetic number, because the mean of its divisors is an integer number (8070696960).

Almost surely, 2^136823531145 is an apocalyptic number.

136823531145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136823531145 is a deficient number, since it is larger than the sum of its proper divisors (121438771575).

136823531145 is a wasteful number, since it uses less digits than its factorization.

136823531145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42034925.

The product of its digits is 259200, while the sum is 42.

Adding to 136823531145 its reverse (541135328631), we get a palindrome (677958859776).

The spelling of 136823531145 in words is "one hundred thirty-six billion, eight hundred twenty-three million, five hundred thirty-one thousand, one hundred forty-five".