13156489847 has 2 divisors, whose sum is σ = 13156489848. Its totient is φ = 13156489846.

The previous prime is 13156489837. The next prime is 13156489849. The reversal of 13156489847 is 74898465131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13156489847 - 2¹⁶ = 13156424311 is a prime.

Together with 13156489849, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13156489792 and 13156489801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13156489849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6578244923 + 6578244924.

It is an arithmetic number, because the mean of its divisors is an integer number (6578244924).

Almost surely, 2^13156489847 is an apocalyptic number.

13156489847 is a deficient number, since it is larger than the sum of its proper divisors (1).

13156489847 is an equidigital number, since it uses as much as digits as its factorization.

13156489847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The spelling of 13156489847 in words is "thirteen billion, one hundred fifty-six million, four hundred eighty-nine thousand, eight hundred forty-seven".