144205221887 has 8 divisors (see below), whose sum is σ = 152694702576. Its totient is φ = 135716499072.

The previous prime is 144205221863. The next prime is 144205221889. The reversal of 144205221887 is 788122502441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144205221887 - 2⁸ = 144205221631 is a prime.

It is a super-3 number, since 3×144205221887³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144205221889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228668 + ... + 583694.

It is an arithmetic number, because the mean of its divisors is an integer number (19086837822).

Almost surely, 2^144205221887 is an apocalyptic number.

144205221887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

144205221887 is a deficient number, since it is larger than the sum of its proper divisors (8489480689).

144205221887 is a wasteful number, since it uses less digits than its factorization.

144205221887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378937.

The product of its (nonzero) digits is 286720, while the sum is 44.

The spelling of 144205221887 in words is "one hundred forty-four billion, two hundred five million, two hundred twenty-one thousand, eight hundred eighty-seven".