140449684566 has 32 divisors (see below), whose sum is σ = 290515258368. Its totient is φ = 45219690720.

The previous prime is 140449684549. The next prime is 140449684579. The reversal of 140449684566 is 665486944041.

It is a super-2 number, since 2×140449684566² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624621 + ... + 819176.

It is an arithmetic number, because the mean of its divisors is an integer number (9078601824).

Almost surely, 2^140449684566 is an apocalyptic number.

140449684566 is an abundant number, since it is smaller than the sum of its proper divisors (150065573802).

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

140449684566 is a wasteful number, since it uses less digits than its factorization.

140449684566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444356.

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 140449684566 in words is "one hundred forty billion, four hundred forty-nine million, six hundred eighty-four thousand, five hundred sixty-six".