145326221153 has 2 divisors, whose sum is σ = 145326221154. Its totient is φ = 145326221152.

The previous prime is 145326221149. The next prime is 145326221191. The reversal of 145326221153 is 351122623541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137658066529 + 7668154624 = 371023^2 + 87568^2 .

It is a cyclic number.

It is not a de Polignac number, because 145326221153 - 2² = 145326221149 is a prime.

It is a super-2 number, since 2×145326221153² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145326221143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72663110576 + 72663110577.

It is an arithmetic number, because the mean of its divisors is an integer number (72663110577).

Almost surely, 2^145326221153 is an apocalyptic number.

It is an amenable number.

145326221153 is a deficient number, since it is larger than the sum of its proper divisors (1).

145326221153 is an equidigital number, since it uses as much as digits as its factorization.

145326221153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

Adding to 145326221153 its reverse (351122623541), we get a palindrome (496448844694).

The spelling of 145326221153 in words is "one hundred forty-five billion, three hundred twenty-six million, two hundred twenty-one thousand, one hundred fifty-three".