145615422213 has 24 divisors (see below), whose sum is σ = 211120337688. Its totient is φ = 96714404352.

The previous prime is 145615422193. The next prime is 145615422223. The reversal of 145615422213 is 312224516541.

145615422213 is a `hidden beast` number, since 1 + 4 + 5 + 6 + 15 + 422 + 213 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7255973124 + 138359449089 = 85182^2 + 371967^2 .

It is not a de Polignac number, because 145615422213 - 2¹⁸ = 145615160069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145615422223) 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 23 ways as a sum of consecutive naturals, for example, 2658681 + ... + 2712897.

It is an arithmetic number, because the mean of its divisors is an integer number (8796680737).

Almost surely, 2^145615422213 is an apocalyptic number.

It is an amenable number.

145615422213 is a deficient number, since it is larger than the sum of its proper divisors (65504915475).

145615422213 is a wasteful number, since it uses less digits than its factorization.

145615422213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55333 (or 55330 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 145615422213 its reverse (312224516541), we get a palindrome (457839938754).

The spelling of 145615422213 in words is "one hundred forty-five billion, six hundred fifteen million, four hundred twenty-two thousand, two hundred thirteen".