144640012792779 has 18 divisors (see below), whose sum is σ = 243034579319220. Its totient is φ = 82651435881336.

The previous prime is 144640012792697. The next prime is 144640012792787. The reversal of 144640012792779 is 977297210046441.

144640012792779 is a `hidden beast` number, since 1 + 4 + 464 + 0 + 0 + 12 + 7 + 92 + 7 + 79 = 666.

It is not a de Polignac number, because 144640012792779 - 2²³ = 144640004404171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (144640012792879) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 163990943769 + ... + 163990944650.

It is an arithmetic number, because the mean of its divisors is an integer number (13501921073290).

Almost surely, 2^{144640012792779} is an apocalyptic number.

144640012792779 is a deficient number, since it is larger than the sum of its proper divisors (98394566526441).

144640012792779 is a wasteful number, since it uses less digits than its factorization.

144640012792779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327981888439 (or 327981888429 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 144640012792779 in words is "one hundred forty-four trillion, six hundred forty billion, twelve million, seven hundred ninety-two thousand, seven hundred seventy-nine".