140679434840 has 32 divisors (see below), whose sum is σ = 361747118880. Its totient is φ = 48232948992.

The previous prime is 140679434821. The next prime is 140679434849. The reversal of 140679434840 is 48434976041.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140679434849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251212997 + ... + 251213556.

It is an arithmetic number, because the mean of its divisors is an integer number (11304597465).

Almost surely, 2^140679434840 is an apocalyptic number.

140679434840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140679434840 is an abundant number, since it is smaller than the sum of its proper divisors (221067684040).

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

140679434840 is a wasteful number, since it uses less digits than its factorization.

140679434840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502426571 (or 502426567 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 140679434840 in words is "one hundred forty billion, six hundred seventy-nine million, four hundred thirty-four thousand, eight hundred forty".