144754841721 has 16 divisors (see below), whose sum is σ = 222165708800. Its totient is φ = 82121964048.

The previous prime is 144754841717. The next prime is 144754841723. The reversal of 144754841721 is 127148457441.

It is not a de Polignac number, because 144754841721 - 2² = 144754841717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144754841723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24792361 + ... + 24798198.

It is an arithmetic number, because the mean of its divisors is an integer number (13885356800).

Almost surely, 2^144754841721 is an apocalyptic number.

It is an amenable number.

144754841721 is a deficient number, since it is larger than the sum of its proper divisors (77410867079).

144754841721 is a wasteful number, since it uses less digits than its factorization.

144754841721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49590708.

The product of its digits is 1003520, while the sum is 48.

The spelling of 144754841721 in words is "one hundred forty-four billion, seven hundred fifty-four million, eight hundred forty-one thousand, seven hundred twenty-one".