140169835985 has 16 divisors (see below), whose sum is σ = 175987620864. Its totient is φ = 106972802112.

The previous prime is 140169835937. The next prime is 140169835987. The reversal of 140169835985 is 589538961041.

It is a cyclic number.

It is not a de Polignac number, because 140169835985 - 2²⁴ = 140153058769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140169835987) 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, 1590977 + ... + 1676766.

It is an arithmetic number, because the mean of its divisors is an integer number (10999226304).

Almost surely, 2^140169835985 is an apocalyptic number.

It is an amenable number.

140169835985 is a deficient number, since it is larger than the sum of its proper divisors (35817784879).

140169835985 is a wasteful number, since it uses less digits than its factorization.

140169835985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268144.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 140169835985 in words is "one hundred forty billion, one hundred sixty-nine million, eight hundred thirty-five thousand, nine hundred eighty-five".