145521021124305 has 24 divisors (see below), whose sum is σ = 257603169313152. Its totient is φ = 75959908897824.

The previous prime is 145521021124279. The next prime is 145521021124361. The reversal of 145521021124305 is 503421120125541.

145521021124305 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 2 + 1 + 0 + 211 + 2 + 430 + 5 = 666.

It is not a de Polignac number, because 145521021124305 - 2¹⁰ = 145521021123281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145521021124305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34402130539 + ... + 34402134768.

It is an arithmetic number, because the mean of its divisors is an integer number (10733465388048).

Almost surely, 2^{145521021124305} is an apocalyptic number.

145521021124305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145521021124305 is a deficient number, since it is larger than the sum of its proper divisors (112082148188847).

145521021124305 is a wasteful number, since it uses less digits than its factorization.

145521021124305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68804265365 (or 68804265362 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 145521021124305 its reverse (503421120125541), we get a palindrome (648942141249846).

The spelling of 145521021124305 in words is "one hundred forty-five trillion, five hundred twenty-one billion, twenty-one million, one hundred twenty-four thousand, three hundred five".