144640456315015 has 16 divisors (see below), whose sum is σ = 173729535707520. Its totient is φ = 115605086660640.

The previous prime is 144640456314983. The next prime is 144640456315039. The reversal of 144640456315015 is 510513654046441.

It is not a de Polignac number, because 144640456315015 - 2⁵ = 144640456314983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144640456315015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21686980 + ... + 27560950.

It is an arithmetic number, because the mean of its divisors is an integer number (10858095981720).

Almost surely, 2^{144640456315015} is an apocalyptic number.

144640456315015 is a deficient number, since it is larger than the sum of its proper divisors (29089079392505).

144640456315015 is a wasteful number, since it uses less digits than its factorization.

144640456315015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878542.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 144640456315015 in words is "one hundred forty-four trillion, six hundred forty billion, four hundred fifty-six million, three hundred fifteen thousand, fifteen".