16547360746121 has 2 divisors, whose sum is σ = 16547360746122. Its totient is φ = 16547360746120.

The previous prime is 16547360746051. The next prime is 16547360746157. The reversal of 16547360746121 is 12164706374561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10879442560000 + 5667918186121 = 3298400^2 + 2380739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16547360746121 is a prime.

It is a super-2 number, since 2×16547360746121² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16547560746121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8273680373060 + 8273680373061.

It is an arithmetic number, because the mean of its divisors is an integer number (8273680373061).

Almost surely, 2^{16547360746121} is an apocalyptic number.

It is an amenable number.

16547360746121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16547360746121 is an equidigital number, since it uses as much as digits as its factorization.

16547360746121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 16547360746121 in words is "sixteen trillion, five hundred forty-seven billion, three hundred sixty million, seven hundred forty-six thousand, one hundred twenty-one".