140321144515 has 4 divisors (see below), whose sum is σ = 168385373424. Its totient is φ = 112256915608.

The previous prime is 140321144479. The next prime is 140321144519. The reversal of 140321144515 is 515441123041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140321144515 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140321144519) 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, 14032114447 + ... + 14032114456.

It is an arithmetic number, because the mean of its divisors is an integer number (42096343356).

Almost surely, 2^140321144515 is an apocalyptic number.

140321144515 is a deficient number, since it is larger than the sum of its proper divisors (28064228909).

140321144515 is an equidigital number, since it uses as much as digits as its factorization.

140321144515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28064228908.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 140321144515 its reverse (515441123041), we get a palindrome (655762267556).

The spelling of 140321144515 in words is "one hundred forty billion, three hundred twenty-one million, one hundred forty-four thousand, five hundred fifteen".