144736986987 has 24 divisors (see below), whose sum is σ = 222204194784. Its totient is φ = 90470033664.

The previous prime is 144736986973. The next prime is 144736986997. The reversal of 144736986987 is 789689637441.

144736986987 is a `hidden beast` number, since 1 + 4 + 473 + 6 + 98 + 69 + 8 + 7 = 666.

It is not a de Polignac number, because 144736986987 - 2¹⁰ = 144736985963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144736986997) 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 23 ways as a sum of consecutive naturals, for example, 1758228 + ... + 1838705.

It is an arithmetic number, because the mean of its divisors is an integer number (9258508116).

Almost surely, 2^144736986987 is an apocalyptic number.

144736986987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

144736986987 is a deficient number, since it is larger than the sum of its proper divisors (77467207797).

144736986987 is a wasteful number, since it uses less digits than its factorization.

144736986987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597219 (or 3597216 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 72.

The spelling of 144736986987 in words is "one hundred forty-four billion, seven hundred thirty-six million, nine hundred eighty-six thousand, nine hundred eighty-seven".