145332040520213 has 4 divisors (see below), whose sum is σ = 145577119847148. Its totient is φ = 145086961193280.

The previous prime is 145332040520171. The next prime is 145332040520333. The reversal of 145332040520213 is 312025040233541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41451874285969 + 103880166234244 = 6438313^2 + 10192162^2 .

It is a cyclic number.

It is not a de Polignac number, because 145332040520213 - 2³² = 145327745552917 is a prime.

It is a super-2 number, since 2×145332040520213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145332040520713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122539662578 + ... + 122539663763.

It is an arithmetic number, because the mean of its divisors is an integer number (36394279961787).

Almost surely, 2^{145332040520213} is an apocalyptic number.

It is an amenable number.

145332040520213 is a deficient number, since it is larger than the sum of its proper divisors (245079326935).

145332040520213 is an equidigital number, since it uses as much as digits as its factorization.

145332040520213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245079326934.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 145332040520213 its reverse (312025040233541), we get a palindrome (457357080753754).

The spelling of 145332040520213 in words is "one hundred forty-five trillion, three hundred thirty-two billion, forty million, five hundred twenty thousand, two hundred thirteen".