15040351321 has 2 divisors, whose sum is σ = 15040351322. Its totient is φ = 15040351320.

The previous prime is 15040351307. The next prime is 15040351397. The reversal of 15040351321 is 12315304051.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13821294096 + 1219057225 = 117564^2 + 34915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15040351321 is a prime.

It is not a weakly prime, because it can be changed into another prime (15040351121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7520175660 + 7520175661.

It is an arithmetic number, because the mean of its divisors is an integer number (7520175661).

Almost surely, 2^15040351321 is an apocalyptic number.

It is an amenable number.

15040351321 is a deficient number, since it is larger than the sum of its proper divisors (1).

15040351321 is an equidigital number, since it uses as much as digits as its factorization.

15040351321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 15040351321 its reverse (12315304051), we get a palindrome (27355655372).

The spelling of 15040351321 in words is "fifteen billion, forty million, three hundred fifty-one thousand, three hundred twenty-one".