140556165040 has 80 divisors (see below), whose sum is σ = 337612320000. Its totient is φ = 54364078080.

The previous prime is 140556165037. The next prime is 140556165049. The reversal of 140556165040 is 40561655041.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (140556165049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3074832 + ... + 3120208.

It is an arithmetic number, because the mean of its divisors is an integer number (4220154000).

Almost surely, 2^140556165040 is an apocalyptic number.

140556165040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140556165040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168806160000).

140556165040 is an abundant number, since it is smaller than the sum of its proper divisors (197056154960).

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

140556165040 is a wasteful number, since it uses less digits than its factorization.

140556165040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46670 (or 46664 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 140556165040 in words is "one hundred forty billion, five hundred fifty-six million, one hundred sixty-five thousand, forty".