6129406081 has 2 divisors, whose sum is σ = 6129406082. Its totient is φ = 6129406080.

The previous prime is 6129406067. The next prime is 6129406097. The reversal of 6129406081 is 1806049216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5041000000 + 1088406081 = 71000^2 + 32991^2 .

It is a cyclic number.

It is not a de Polignac number, because 6129406081 - 2¹¹ = 6129404033 is a prime.

It is a super-2 number, since 2×6129406081² = 75139237811599557122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6129406081.

It is not a weakly prime, because it can be changed into another prime (6129406001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3064703040 + 3064703041.

It is an arithmetic number, because the mean of its divisors is an integer number (3064703041).

Almost surely, 2^6129406081 is an apocalyptic number.

It is an amenable number.

6129406081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6129406081 is an equidigital number, since it uses as much as digits as its factorization.

6129406081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 6129406081 is about 78290.5235708639. The cubic root of 6129406081 is about 1830.0914763116.

The spelling of 6129406081 in words is "six billion, one hundred twenty-nine million, four hundred six thousand, eighty-one".