140669472785 has 4 divisors (see below), whose sum is σ = 168803367348. Its totient is φ = 112535578224.

The previous prime is 140669472763. The next prime is 140669472793. The reversal of 140669472785 is 587274966041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84776474896 + 55892997889 = 291164^2 + 236417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140669472785 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14066947274 + ... + 14066947283.

It is an arithmetic number, because the mean of its divisors is an integer number (42200841837).

Almost surely, 2^140669472785 is an apocalyptic number.

It is an amenable number.

140669472785 is a deficient number, since it is larger than the sum of its proper divisors (28133894563).

140669472785 is an equidigital number, since it uses as much as digits as its factorization.

140669472785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28133894562.

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 140669472785 in words is "one hundred forty billion, six hundred sixty-nine million, four hundred seventy-two thousand, seven hundred eighty-five".