144252221515 has 96 divisors (see below), whose sum is σ = 202295808000. Its totient is φ = 98328287232.

The previous prime is 144252221483. The next prime is 144252221543. The reversal of 144252221515 is 515122252441.

It is not a de Polignac number, because 144252221515 - 2⁵ = 144252221483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 82007206 + ... + 82008964.

It is an arithmetic number, because the mean of its divisors is an integer number (2107248000).

Almost surely, 2^144252221515 is an apocalyptic number.

144252221515 is a deficient number, since it is larger than the sum of its proper divisors (58043586485).

144252221515 is a wasteful number, since it uses less digits than its factorization.

144252221515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1932 counting only the distinct ones).

The product of its digits is 32000, while the sum is 34.

Adding to 144252221515 its reverse (515122252441), we get a palindrome (659374473956).

The spelling of 144252221515 in words is "one hundred forty-four billion, two hundred fifty-two million, two hundred twenty-one thousand, five hundred fifteen".