145814353521 has 16 divisors (see below), whose sum is σ = 216690062400. Its totient is φ = 86676023808.

The previous prime is 145814353459. The next prime is 145814353537. The reversal of 145814353521 is 125353418541.

It is not a de Polignac number, because 145814353521 - 2²⁷ = 145680135793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145814353721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75238636 + ... + 75240573.

It is an arithmetic number, because the mean of its divisors is an integer number (13543128900).

Almost surely, 2^145814353521 is an apocalyptic number.

It is an amenable number.

145814353521 is a deficient number, since it is larger than the sum of its proper divisors (70875708879).

145814353521 is a wasteful number, since it uses less digits than its factorization.

145814353521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150479248.

The product of its digits is 288000, while the sum is 42.

The spelling of 145814353521 in words is "one hundred forty-five billion, eight hundred fourteen million, three hundred fifty-three thousand, five hundred twenty-one".