5421662072129 has 2 divisors, whose sum is σ = 5421662072130. Its totient is φ = 5421662072128.

The previous prime is 5421662072119. The next prime is 5421662072243. The reversal of 5421662072129 is 9212702661245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3870080431504 + 1551581640625 = 1967252^2 + 1245625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5421662072129 is a prime.

It is not a weakly prime, because it can be changed into another prime (5421662072119) 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, 2710831036064 + 2710831036065.

It is an arithmetic number, because the mean of its divisors is an integer number (2710831036065).

Almost surely, 2^{5421662072129} is an apocalyptic number.

It is an amenable number.

5421662072129 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421662072129 is an equidigital number, since it uses as much as digits as its factorization.

5421662072129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 5421662072129 in words is "five trillion, four hundred twenty-one billion, six hundred sixty-two million, seventy-two thousand, one hundred twenty-nine".