13355803778 has 8 divisors (see below), whose sum is σ = 20034430272. Its totient is φ = 6677660356.

The previous prime is 13355803777. The next prime is 13355803787. The reversal of 13355803778 is 87730855331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13355803777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41150 + ... + 168537.

It is an arithmetic number, because the mean of its divisors is an integer number (2504303784).

Almost surely, 2^13355803778 is an apocalyptic number.

13355803778 is a deficient number, since it is larger than the sum of its proper divisors (6678626494).

13355803778 is a wasteful number, since it uses less digits than its factorization.

13355803778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241536.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 13355803778 in words is "thirteen billion, three hundred fifty-five million, eight hundred three thousand, seven hundred seventy-eight".