144021887871 has 4 divisors (see below), whose sum is σ = 192029183832. Its totient is φ = 96014591912.

The previous prime is 144021887861. The next prime is 144021887917. The reversal of 144021887871 is 178788120441.

It is a happy number.

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 144021887871 - 2¹⁰ = 144021886847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144021887861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24003647976 + ... + 24003647981.

It is an arithmetic number, because the mean of its divisors is an integer number (48007295958).

Almost surely, 2^144021887871 is an apocalyptic number.

144021887871 is a deficient number, since it is larger than the sum of its proper divisors (48007295961).

144021887871 is an equidigital number, since it uses as much as digits as its factorization.

144021887871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48007295960.

The product of its (nonzero) digits is 802816, while the sum is 51.

The spelling of 144021887871 in words is "one hundred forty-four billion, twenty-one million, eight hundred eighty-seven thousand, eight hundred seventy-one".