140534646640 has 80 divisors (see below), whose sum is σ = 346042450080. Its totient is φ = 52895047680.

The previous prime is 140534646619. The next prime is 140534646647. The reversal of 140534646640 is 46646435041.

140534646640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140534646647) 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, 7850500 + ... + 7868380.

It is an arithmetic number, because the mean of its divisors is an integer number (4325530626).

Almost surely, 2^140534646640 is an apocalyptic number.

140534646640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140534646640 is an abundant number, since it is smaller than the sum of its proper divisors (205507803440).

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

140534646640 is a wasteful number, since it uses less digits than its factorization.

140534646640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690 (or 23684 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 140534646640 in words is "one hundred forty billion, five hundred thirty-four million, six hundred forty-six thousand, six hundred forty".