15091139689 has 2 divisors, whose sum is σ = 15091139690. Its totient is φ = 15091139688.

The previous prime is 15091139681. The next prime is 15091139719. The reversal of 15091139689 is 98693119051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9255402025 + 5835737664 = 96205^2 + 76392^2 .

It is a cyclic number.

It is not a de Polignac number, because 15091139689 - 2³ = 15091139681 is a prime.

It is a super-2 number, since 2×15091139689² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15091139681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7545569844 + 7545569845.

It is an arithmetic number, because the mean of its divisors is an integer number (7545569845).

Almost surely, 2^15091139689 is an apocalyptic number.

It is an amenable number.

15091139689 is a deficient number, since it is larger than the sum of its proper divisors (1).

15091139689 is an equidigital number, since it uses as much as digits as its factorization.

15091139689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 52.

The spelling of 15091139689 in words is "fifteen billion, ninety-one million, one hundred thirty-nine thousand, six hundred eighty-nine".