13535778079 has 4 divisors (see below), whose sum is σ = 13621993384. Its totient is φ = 13449562776.

The previous prime is 13535778073. The next prime is 13535778119. The reversal of 13535778079 is 97087753531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97087753531 = 220327 ⋅440653.

It is a cyclic number.

It is not a de Polignac number, because 13535778079 - 2³ = 13535778071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13535778071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43107417 + ... + 43107730.

It is an arithmetic number, because the mean of its divisors is an integer number (3405498346).

Almost surely, 2^13535778079 is an apocalyptic number.

13535778079 is a deficient number, since it is larger than the sum of its proper divisors (86215305).

13535778079 is an equidigital number, since it uses as much as digits as its factorization.

13535778079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86215304.

The product of its (nonzero) digits is 5556600, while the sum is 55.

The spelling of 13535778079 in words is "thirteen billion, five hundred thirty-five million, seven hundred seventy-eight thousand, seventy-nine".