13135553778 has 32 divisors (see below), whose sum is σ = 27971904960. Its totient is φ = 4097930240.

The previous prime is 13135553777. The next prime is 13135553797. The reversal of 13135553778 is 87735553131.

13135553778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13135553773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341463 + ... + 377978.

It is an arithmetic number, because the mean of its divisors is an integer number (874122030).

Almost surely, 2^13135553778 is an apocalyptic number.

13135553778 is an abundant number, since it is smaller than the sum of its proper divisors (14836351182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13135553778 is a wasteful number, since it uses less digits than its factorization.

13135553778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719642.

The product of its digits is 1323000, while the sum is 48.

The spelling of 13135553778 in words is "thirteen billion, one hundred thirty-five million, five hundred fifty-three thousand, seven hundred seventy-eight".