145501522514 has 4 divisors (see below), whose sum is σ = 218252283774. Its totient is φ = 72750761256.

The previous prime is 145501522447. The next prime is 145501522541. The reversal of 145501522514 is 415225105541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415225105541 = 107 ⋅3880608463.

It can be written as a sum of positive squares in only one way, i.e., 144411400225 + 1090122289 = 380015^2 + 33017^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36375380627 + ... + 36375380630.

Almost surely, 2^145501522514 is an apocalyptic number.

145501522514 is a deficient number, since it is larger than the sum of its proper divisors (72750761260).

145501522514 is an equidigital number, since it uses as much as digits as its factorization.

145501522514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72750761259.

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 145501522514 in words is "one hundred forty-five billion, five hundred one million, five hundred twenty-two thousand, five hundred fourteen".