140906859640 has 64 divisors (see below), whose sum is σ = 319245040800. Its totient is φ = 55971675648.

The previous prime is 140906859637. The next prime is 140906859649. The reversal of 140906859640 is 46958609041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140906859649) 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, 5407122 + ... + 5433118.

Almost surely, 2^140906859640 is an apocalyptic number.

140906859640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140906859640 is an abundant number, since it is smaller than the sum of its proper divisors (178338181160).

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

140906859640 is a wasteful number, since it uses less digits than its factorization.

140906859640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26944 (or 26940 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 140906859640 in words is "one hundred forty billion, nine hundred six million, eight hundred fifty-nine thousand, six hundred forty".