140350878640 has 80 divisors (see below), whose sum is σ = 373749060672. Its totient is φ = 48014917632.

The previous prime is 140350878623. The next prime is 140350878671. The reversal of 140350878640 is 46878053041.

It is a happy number.

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

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, 18289 + ... + 530128.

Almost surely, 2^140350878640 is an apocalyptic number.

140350878640 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 140350878640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186874530336).

140350878640 is an abundant number, since it is smaller than the sum of its proper divisors (233398182032).

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

140350878640 is a wasteful number, since it uses less digits than its factorization.

140350878640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548894 (or 548888 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 140350878640 in words is "one hundred forty billion, three hundred fifty million, eight hundred seventy-eight thousand, six hundred forty".