145501445315521 has 32 divisors (see below), whose sum is σ = 152376612772608. Its totient is φ = 138673016064000.

The previous prime is 145501445315477. The next prime is 145501445315581. The reversal of 145501445315521 is 125513544105541.

It is a happy number.

It is not a de Polignac number, because 145501445315521 - 2⁷ = 145501445315393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145501445315581) 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 31 ways as a sum of consecutive naturals, for example, 37146141855 + ... + 37146145771.

It is an arithmetic number, because the mean of its divisors is an integer number (4761769149144).

Almost surely, 2^{145501445315521} is an apocalyptic number.

It is an amenable number.

145501445315521 is a deficient number, since it is larger than the sum of its proper divisors (6875167457087).

145501445315521 is a wasteful number, since it uses less digits than its factorization.

145501445315521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8281.

The product of its (nonzero) digits is 1200000, while the sum is 46.

The spelling of 145501445315521 in words is "one hundred forty-five trillion, five hundred one billion, four hundred forty-five million, three hundred fifteen thousand, five hundred twenty-one".