15616061579 has 2 divisors, whose sum is σ = 15616061580. Its totient is φ = 15616061578.

The previous prime is 15616061567. The next prime is 15616061581. The reversal of 15616061579 is 97516061651.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97516061651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15616061579 is a prime.

It is a super-2 number, since 2×15616061579² (a number of 21 digits) contains 22 as substring.

Together with 15616061581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15616061519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7808030789 + 7808030790.

It is an arithmetic number, because the mean of its divisors is an integer number (7808030790).

Almost surely, 2^15616061579 is an apocalyptic number.

15616061579 is a deficient number, since it is larger than the sum of its proper divisors (1).

15616061579 is an equidigital number, since it uses as much as digits as its factorization.

15616061579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 15616061579 in words is "fifteen billion, six hundred sixteen million, sixty-one thousand, five hundred seventy-nine".