16135449717757 has 2 divisors, whose sum is σ = 16135449717758. Its totient is φ = 16135449717756.

The previous prime is 16135449717707. The next prime is 16135449717773. The reversal of 16135449717757 is 75771794453161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14881779851481 + 1253669866276 = 3857691^2 + 1119674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16135449717757 is a prime.

It is a super-2 number, since 2×16135449717757² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16135449717692 and 16135449717701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16135449717707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8067724858878 + 8067724858879.

It is an arithmetic number, because the mean of its divisors is an integer number (8067724858879).

Almost surely, 2^{16135449717757} is an apocalyptic number.

It is an amenable number.

16135449717757 is a deficient number, since it is larger than the sum of its proper divisors (1).

16135449717757 is an equidigital number, since it uses as much as digits as its factorization.

16135449717757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155584800, while the sum is 67.

The spelling of 16135449717757 in words is "sixteen trillion, one hundred thirty-five billion, four hundred forty-nine million, seven hundred seventeen thousand, seven hundred fifty-seven".