144146661015431 has 4 divisors (see below), whose sum is σ = 144147924831192. Its totient is φ = 144145397199672.

The previous prime is 144146661015361. The next prime is 144146661015493. The reversal of 144146661015431 is 134510166641441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144146661015431 - 2³⁰ = 144145587273607 is a prime.

It is a super-2 number, since 2×144146661015431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144146661015131) 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 3 ways as a sum of consecutive naturals, for example, 631736780 + ... + 631964913.

It is an arithmetic number, because the mean of its divisors is an integer number (36036981207798).

Almost surely, 2^{144146661015431} is an apocalyptic number.

144146661015431 is a deficient number, since it is larger than the sum of its proper divisors (1263815761).

144146661015431 is a wasteful number, since it uses less digits than its factorization.

144146661015431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263815760.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 144146661015431 in words is "one hundred forty-four trillion, one hundred forty-six billion, six hundred sixty-one million, fifteen thousand, four hundred thirty-one".