13334778903557 has 2 divisors, whose sum is σ = 13334778903558. Its totient is φ = 13334778903556.

The previous prime is 13334778903547. The next prime is 13334778903577. The reversal of 13334778903557 is 75530987743331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13284085930756 + 50692972801 = 3644734^2 + 225151^2 .

It is a cyclic number.

It is not a de Polignac number, because 13334778903557 - 2²⁶ = 13334711794693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13334778903493 and 13334778903502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13334778903547) 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 as a sum of consecutive naturals, namely, 6667389451778 + 6667389451779.

It is an arithmetic number, because the mean of its divisors is an integer number (6667389451779).

Almost surely, 2^{13334778903557} is an apocalyptic number.

It is an amenable number.

13334778903557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13334778903557 is an equidigital number, since it uses as much as digits as its factorization.

13334778903557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200037600, while the sum is 65.

The spelling of 13334778903557 in words is "thirteen trillion, three hundred thirty-four billion, seven hundred seventy-eight million, nine hundred three thousand, five hundred fifty-seven".