13099435778 has 64 divisors (see below), whose sum is σ = 24918969600. Its totient is φ = 5075938560.

The previous prime is 13099435771. The next prime is 13099435819. The reversal of 13099435778 is 87753499031.

It is not an unprimeable number, because it can be changed into a prime (13099435771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156428 + ... + 225096.

It is an arithmetic number, because the mean of its divisors is an integer number (389358900).

Almost surely, 2^13099435778 is an apocalyptic number.

13099435778 is a deficient number, since it is larger than the sum of its proper divisors (11819533822).

13099435778 is a wasteful number, since it uses less digits than its factorization.

13099435778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68747.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 13099435778 in words is "thirteen billion, ninety-nine million, four hundred thirty-five thousand, seven hundred seventy-eight".