16130056278121 has 2 divisors, whose sum is σ = 16130056278122. Its totient is φ = 16130056278120.

The previous prime is 16130056278107. The next prime is 16130056278163. The reversal of 16130056278121 is 12187265003161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15232347402496 + 897708875625 = 3902864^2 + 947475^2 .

It is a cyclic number.

It is not a de Polignac number, because 16130056278121 - 2¹⁵ = 16130056245353 is a prime.

It is not a weakly prime, because it can be changed into another prime (16130056278221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8065028139060 + 8065028139061.

It is an arithmetic number, because the mean of its divisors is an integer number (8065028139061).

Almost surely, 2^{16130056278121} is an apocalyptic number.

It is an amenable number.

16130056278121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16130056278121 is an equidigital number, since it uses as much as digits as its factorization.

16130056278121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 16130056278121 in words is "sixteen trillion, one hundred thirty billion, fifty-six million, two hundred seventy-eight thousand, one hundred twenty-one".