840138062264 has 16 divisors (see below), whose sum is σ = 1595198853600. Its totient is φ = 414751701312.

The previous prime is 840138062263. The next prime is 840138062273. The reversal of 840138062264 is 462260831048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840138062263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664665557 + ... + 664666820.

It is an arithmetic number, because the mean of its divisors is an integer number (99699928350).

Almost surely, 2^840138062264 is an apocalyptic number.

It is an amenable number.

840138062264 is a deficient number, since it is larger than the sum of its proper divisors (755060791336).

840138062264 is a wasteful number, since it uses less digits than its factorization.

840138062264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329332462 (or 1329332458 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 840138062264 in words is "eight hundred forty billion, one hundred thirty-eight million, sixty-two thousand, two hundred sixty-four".