145213454297 has 4 divisors (see below), whose sum is σ = 150220814820. Its totient is φ = 140206093776.

The previous prime is 145213454251. The next prime is 145213454369. The reversal of 145213454297 is 792454312541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 792454312541 = 46271 ⋅17126371.

It can be written as a sum of positive squares in 2 ways, for example, as 111762507481 + 33450946816 = 334309^2 + 182896^2 .

It is a cyclic number.

It is not a de Polignac number, because 145213454297 - 2¹⁴ = 145213437913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145213454227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2503680218 + ... + 2503680275.

It is an arithmetic number, because the mean of its divisors is an integer number (37555203705).

Almost surely, 2^145213454297 is an apocalyptic number.

It is an amenable number.

145213454297 is a deficient number, since it is larger than the sum of its proper divisors (5007360523).

145213454297 is an equidigital number, since it uses as much as digits as its factorization.

145213454297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007360522.

The product of its digits is 1209600, while the sum is 47.

The spelling of 145213454297 in words is "one hundred forty-five billion, two hundred thirteen million, four hundred fifty-four thousand, two hundred ninety-seven".