145615133213 has 6 divisors (see below), whose sum is σ = 160056303582. Its totient is φ = 132377393720.

The previous prime is 145615133197. The next prime is 145615133249. The reversal of 145615133213 is 312331516541.

It can be written as a sum of positive squares in only one way, i.e., 77432523289 + 68182609924 = 278267^2 + 261118^2 .

It is not a de Polignac number, because 145615133213 - 2⁴ = 145615133197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145615133263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 601715306 + ... + 601715547.

It is an arithmetic number, because the mean of its divisors is an integer number (26676050597).

Almost surely, 2^145615133213 is an apocalyptic number.

It is an amenable number.

145615133213 is a deficient number, since it is larger than the sum of its proper divisors (14441170369).

145615133213 is a wasteful number, since it uses less digits than its factorization.

145615133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203430875 (or 1203430864 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

Adding to 145615133213 its reverse (312331516541), we get a palindrome (457946649754).

The spelling of 145615133213 in words is "one hundred forty-five billion, six hundred fifteen million, one hundred thirty-three thousand, two hundred thirteen".