140243561535 has 32 divisors (see below), whose sum is σ = 279758587392. Its totient is φ = 58283038080.

The previous prime is 140243561489. The next prime is 140243561599. The reversal of 140243561535 is 535165342041.

It is a happy number.

It is not a de Polignac number, because 140243561535 - 2⁹ = 140243561023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140243561493 and 140243561502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60710344 + ... + 60712653.

It is an arithmetic number, because the mean of its divisors is an integer number (8742455856).

Almost surely, 2^140243561535 is an apocalyptic number.

140243561535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140243561535 is a deficient number, since it is larger than the sum of its proper divisors (139515025857).

140243561535 is a wasteful number, since it uses less digits than its factorization.

140243561535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121423023.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 140243561535 in words is "one hundred forty billion, two hundred forty-three million, five hundred sixty-one thousand, five hundred thirty-five".