13552166857 has 2 divisors, whose sum is σ = 13552166858. Its totient is φ = 13552166856.

The previous prime is 13552166843. The next prime is 13552166867. The reversal of 13552166857 is 75866125531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13470155721 + 82011136 = 116061^2 + 9056^2 .

It is a cyclic number.

It is not a de Polignac number, because 13552166857 - 2³¹ = 11404683209 is a prime.

It is a super-2 number, since 2×13552166857² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13552166857.

It is not a weakly prime, because it can be changed into another prime (13552166807) 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, 6776083428 + 6776083429.

It is an arithmetic number, because the mean of its divisors is an integer number (6776083429).

Almost surely, 2^13552166857 is an apocalyptic number.

It is an amenable number.

13552166857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13552166857 is an equidigital number, since it uses as much as digits as its factorization.

13552166857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 49.

The spelling of 13552166857 in words is "thirteen billion, five hundred fifty-two million, one hundred sixty-six thousand, eight hundred fifty-seven".