13649515879 has 2 divisors, whose sum is σ = 13649515880. Its totient is φ = 13649515878.

The previous prime is 13649515823. The next prime is 13649515889. The reversal of 13649515879 is 97851594631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13649515879 - 2¹³ = 13649507687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13649515889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824757939 + 6824757940.

It is an arithmetic number, because the mean of its divisors is an integer number (6824757940).

Almost surely, 2^13649515879 is an apocalyptic number.

13649515879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13649515879 is an equidigital number, since it uses as much as digits as its factorization.

13649515879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 58.

The spelling of 13649515879 in words is "thirteen billion, six hundred forty-nine million, five hundred fifteen thousand, eight hundred seventy-nine".