145521105145 has 8 divisors (see below), whose sum is σ = 188058043656. Its totient is φ = 107461739136.

The previous prime is 145521105143. The next prime is 145521105151. The reversal of 145521105145 is 541501125541.

It can be written as a sum of positive squares in 4 ways, for example, as 24185226256 + 121335878889 = 155516^2 + 348333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145521105145 - 2¹ = 145521105143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145521105145.

It is not an unprimeable number, because it can be changed into a prime (145521105143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1119393052 + ... + 1119393181.

It is an arithmetic number, because the mean of its divisors is an integer number (23507255457).

Almost surely, 2^145521105145 is an apocalyptic number.

It is an amenable number.

145521105145 is a deficient number, since it is larger than the sum of its proper divisors (42536938511).

145521105145 is a wasteful number, since it uses less digits than its factorization.

145521105145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238786251.

The product of its (nonzero) digits is 20000, while the sum is 34.

The spelling of 145521105145 in words is "one hundred forty-five billion, five hundred twenty-one million, one hundred five thousand, one hundred forty-five".