145524362265521 has 4 divisors (see below), whose sum is σ = 148908649760112. Its totient is φ = 142140074770932.

The previous prime is 145524362265473. The next prime is 145524362265533. The reversal of 145524362265521 is 125562263425541.

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 a de Polignac number, because none of the positive numbers 2^k-145524362265521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145524362265551) 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, 1692143747231 + ... + 1692143747316.

It is an arithmetic number, because the mean of its divisors is an integer number (37227162440028).

Almost surely, 2^{145524362265521} is an apocalyptic number.

It is an amenable number.

145524362265521 is a deficient number, since it is larger than the sum of its proper divisors (3384287494591).

145524362265521 is an equidigital number, since it uses as much as digits as its factorization.

145524362265521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384287494590.

The product of its digits is 17280000, while the sum is 53.

The spelling of 145524362265521 in words is "one hundred forty-five trillion, five hundred twenty-four billion, three hundred sixty-two million, two hundred sixty-five thousand, five hundred twenty-one".