140342036645 has 4 divisors (see below), whose sum is σ = 168410443980. Its totient is φ = 112273629312.

The previous prime is 140342036641. The next prime is 140342036719. The reversal of 140342036645 is 546630243041.

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 75532078561 + 64809958084 = 274831^2 + 254578^2 .

It is a cyclic number.

It is not a de Polignac number, because 140342036645 - 2² = 140342036641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140342036599 and 140342036608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140342036641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14034203660 + ... + 14034203669.

It is an arithmetic number, because the mean of its divisors is an integer number (42102610995).

Almost surely, 2^140342036645 is an apocalyptic number.

It is an amenable number.

140342036645 is a deficient number, since it is larger than the sum of its proper divisors (28068407335).

140342036645 is an equidigital number, since it uses as much as digits as its factorization.

140342036645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28068407334.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 140342036645 its reverse (546630243041), we get a palindrome (686972279686).

The spelling of 140342036645 in words is "one hundred forty billion, three hundred forty-two million, thirty-six thousand, six hundred forty-five".