145397252269 has 4 divisors (see below), whose sum is σ = 145780886560. Its totient is φ = 145013617980.

The previous prime is 145397252267. The next prime is 145397252291. The reversal of 145397252269 is 962252793541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145397252269 - 2¹ = 145397252267 is a prime.

It is a super-2 number, since 2×145397252269² (a number of 23 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 (145397252261) 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, 191816577 + ... + 191817334.

It is an arithmetic number, because the mean of its divisors is an integer number (36445221640).

Almost surely, 2^145397252269 is an apocalyptic number.

It is an amenable number.

145397252269 is a deficient number, since it is larger than the sum of its proper divisors (383634291).

145397252269 is an equidigital number, since it uses as much as digits as its factorization.

145397252269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383634290.

The product of its digits is 8164800, while the sum is 55.

The spelling of 145397252269 in words is "one hundred forty-five billion, three hundred ninety-seven million, two hundred fifty-two thousand, two hundred sixty-nine".