140785078509 has 20 divisors (see below), whose sum is σ = 211174070976. Its totient is φ = 93856705884.

The previous prime is 140785078507. The next prime is 140785078517. The reversal of 140785078509 is 905870587041.

140785078509 is a `hidden beast` number, since 14 + 0 + 7 + 8 + 50 + 78 + 509 = 666.

140785078509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140785078509 - 2¹ = 140785078507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140785078507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3556629 + ... + 3595994.

Almost surely, 2^140785078509 is an apocalyptic number.

It is an amenable number.

140785078509 is a deficient number, since it is larger than the sum of its proper divisors (70388992467).

140785078509 is an frugal number, since it uses more digits than its factorization.

140785078509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152650 (or 7152626 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 54.

The spelling of 140785078509 in words is "one hundred forty billion, seven hundred eighty-five million, seventy-eight thousand, five hundred nine".