15072731501 has 2 divisors, whose sum is σ = 15072731502. Its totient is φ = 15072731500.

The previous prime is 15072731491. The next prime is 15072731537. The reversal of 15072731501 is 10513727051.

15072731501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13911966601 + 1160764900 = 117949^2 + 34070^2 .

It is an emirp because it is prime and its reverse (10513727051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15072731501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15072731561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7536365750 + 7536365751.

It is an arithmetic number, because the mean of its divisors is an integer number (7536365751).

Almost surely, 2^15072731501 is an apocalyptic number.

It is an amenable number.

15072731501 is a deficient number, since it is larger than the sum of its proper divisors (1).

15072731501 is an equidigital number, since it uses as much as digits as its factorization.

15072731501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 32.

The spelling of 15072731501 in words is "fifteen billion, seventy-two million, seven hundred thirty-one thousand, five hundred one".