140665208061408 has 192 divisors, whose sum is σ = 397148633763840. Its totient is φ = 43453714816512.

The previous prime is 140665208061403. The next prime is 140665208061439. The reversal of 140665208061408 is 804160802566041.

140665208061408 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140665208061403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171303591 + ... + 172122777.

It is an arithmetic number, because the mean of its divisors is an integer number (2068482467520).

Almost surely, 2^{140665208061408} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140665208061408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198574316881920).

140665208061408 is an abundant number, since it is smaller than the sum of its proper divisors (256483425702432).

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

140665208061408 is a wasteful number, since it uses less digits than its factorization.

140665208061408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821269 (or 821261 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 140665208061408 in words is "one hundred forty trillion, six hundred sixty-five billion, two hundred eight million, sixty-one thousand, four hundred eight".