140155569988 has 48 divisors (see below), whose sum is σ = 287023693824. Its totient is φ = 58634952480.

The previous prime is 140155569979. The next prime is 140155570007. The reversal of 140155569988 is 889965551041.

It is a super-2 number, since 2×140155569988² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364993 + ... + 643063.

It is an arithmetic number, because the mean of its divisors is an integer number (5979660288).

Almost surely, 2^140155569988 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 140155569988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143511846912).

140155569988 is an abundant number, since it is smaller than the sum of its proper divisors (146868123836).

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

140155569988 is a wasteful number, since it uses less digits than its factorization.

140155569988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278512 (or 278510 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 61.

The spelling of 140155569988 in words is "one hundred forty billion, one hundred fifty-five million, five hundred sixty-nine thousand, nine hundred eighty-eight".