145265174549 has 4 divisors (see below), whose sum is σ = 158471099520. Its totient is φ = 132059249580.

The previous prime is 145265174533. The next prime is 145265174567. The reversal of 145265174549 is 945471562541.

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 145265174549 - 2⁴ = 145265174533 is a prime.

It is a super-2 number, since 2×145265174549² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145265174549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145265174149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6602962469 + ... + 6602962490.

It is an arithmetic number, because the mean of its divisors is an integer number (39617774880).

Almost surely, 2^145265174549 is an apocalyptic number.

It is an amenable number.

145265174549 is a deficient number, since it is larger than the sum of its proper divisors (13205924971).

145265174549 is a wasteful number, since it uses less digits than its factorization.

145265174549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13205924970.

The product of its digits is 6048000, while the sum is 53.

The spelling of 145265174549 in words is "one hundred forty-five billion, two hundred sixty-five million, one hundred seventy-four thousand, five hundred forty-nine".