13817774077 has 2 divisors, whose sum is σ = 13817774078. Its totient is φ = 13817774076.

The previous prime is 13817774023. The next prime is 13817774083. The reversal of 13817774077 is 77047771831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13665843801 + 151930276 = 116901^2 + 12326^2 .

It is a cyclic number.

It is not a de Polignac number, because 13817774077 - 2¹¹ = 13817772029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14817774077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6908887038 + 6908887039.

It is an arithmetic number, because the mean of its divisors is an integer number (6908887039).

Almost surely, 2^13817774077 is an apocalyptic number.

It is an amenable number.

13817774077 is a deficient number, since it is larger than the sum of its proper divisors (1).

13817774077 is an equidigital number, since it uses as much as digits as its factorization.

13817774077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1613472, while the sum is 52.

The spelling of 13817774077 in words is "thirteen billion, eight hundred seventeen million, seven hundred seventy-four thousand, seventy-seven".