140237968640 has 864 divisors, whose sum is σ = 450969845760. Its totient is φ = 41261875200.

The previous prime is 140237968631. The next prime is 140237968691. The reversal of 140237968640 is 46869732041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1689614039 + ... + 1689614121.

It is an arithmetic number, because the mean of its divisors is an integer number (521955840).

Almost surely, 2^140237968640 is an apocalyptic number.

140237968640 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 140237968640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225484922880).

140237968640 is an abundant number, since it is smaller than the sum of its proper divisors (310731877120).

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

140237968640 is a wasteful number, since it uses less digits than its factorization.

140237968640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 140237968640 in words is "one hundred forty billion, two hundred thirty-seven million, nine hundred sixty-eight thousand, six hundred forty".