840434500180 has 48 divisors (see below), whose sum is σ = 2038615459776. Its totient is φ = 287635335680.

The previous prime is 840434500159. The next prime is 840434500183. The reversal of 840434500180 is 81005434048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840434500183) 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 15 ways as a sum of consecutive naturals, for example, 112353814 + ... + 112361293.

It is an arithmetic number, because the mean of its divisors is an integer number (42471155412).

Almost surely, 2^840434500180 is an apocalyptic number.

It is an amenable number.

840434500180 is an abundant number, since it is smaller than the sum of its proper divisors (1198180959596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840434500180 is a wasteful number, since it uses less digits than its factorization.

840434500180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224715144 (or 224715142 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 840434500180 in words is "eight hundred forty billion, four hundred thirty-four million, five hundred thousand, one hundred eighty".