145521042342515 has 32 divisors (see below), whose sum is σ = 201435055873920. Its totient is φ = 98854481894400.

The previous prime is 145521042342497. The next prime is 145521042342587. The reversal of 145521042342515 is 515243240125541.

It is not a de Polignac number, because 145521042342515 - 2¹⁸ = 145521042080371 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20667335 + ... + 26798895.

It is an arithmetic number, because the mean of its divisors is an integer number (6294845496060).

Almost surely, 2^{145521042342515} is an apocalyptic number.

145521042342515 is a deficient number, since it is larger than the sum of its proper divisors (55914013531405).

145521042342515 is a wasteful number, since it uses less digits than its factorization.

145521042342515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137903.

The product of its (nonzero) digits is 960000, while the sum is 44.

The spelling of 145521042342515 in words is "one hundred forty-five trillion, five hundred twenty-one billion, forty-two million, three hundred forty-two thousand, five hundred fifteen".