15072445517 has 2 divisors, whose sum is σ = 15072445518. Its totient is φ = 15072445516.

The previous prime is 15072445483. The next prime is 15072445559. The reversal of 15072445517 is 71554427051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13081411876 + 1991033641 = 114374^2 + 44621^2 .

It is an emirp because it is prime and its reverse (71554427051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15072445517 - 2¹⁰ = 15072444493 is a prime.

It is a super-2 number, since 2×15072445517² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15072445567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7536222758 + 7536222759.

It is an arithmetic number, because the mean of its divisors is an integer number (7536222759).

Almost surely, 2^15072445517 is an apocalyptic number.

It is an amenable number.

15072445517 is a deficient number, since it is larger than the sum of its proper divisors (1).

15072445517 is an equidigital number, since it uses as much as digits as its factorization.

15072445517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 15072445517 in words is "fifteen billion, seventy-two million, four hundred forty-five thousand, five hundred seventeen".