140535121555 has 16 divisors (see below), whose sum is σ = 177527285280. Its totient is φ = 106505286912.

The previous prime is 140535121513. The next prime is 140535121609. The reversal of 140535121555 is 555121535041.

It is a cyclic number.

It is not a de Polignac number, because 140535121555 - 2¹³ = 140535113363 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3504277 + ... + 3544153.

It is an arithmetic number, because the mean of its divisors is an integer number (11095455330).

Almost surely, 2^140535121555 is an apocalyptic number.

140535121555 is a deficient number, since it is larger than the sum of its proper divisors (36992163725).

140535121555 is a wasteful number, since it uses less digits than its factorization.

140535121555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76998.

The product of its (nonzero) digits is 75000, while the sum is 37.

Adding to 140535121555 its reverse (555121535041), we get a palindrome (695656656596).

The spelling of 140535121555 in words is "one hundred forty billion, five hundred thirty-five million, one hundred twenty-one thousand, five hundred fifty-five".