140509686492 has 576 divisors, whose sum is σ = 467486982144. Its totient is φ = 34634096640.

The previous prime is 140509686437. The next prime is 140509686503. The reversal of 140509686492 is 294686905041.

140509686492 is a `hidden beast` number, since 1 + 40 + 50 + 9 + 68 + 6 + 492 = 666.

140509686492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 479555098 + ... + 479555390.

It is an arithmetic number, because the mean of its divisors is an integer number (811609344).

Almost surely, 2^140509686492 is an apocalyptic number.

140509686492 is a gapful number since it is divisible by the number (12) 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 140509686492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233743491072).

140509686492 is an abundant number, since it is smaller than the sum of its proper divisors (326977295652).

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

140509686492 is a wasteful number, since it uses less digits than its factorization.

140509686492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 140509686492 in words is "one hundred forty billion, five hundred nine million, six hundred eighty-six thousand, four hundred ninety-two".