6156612001 has 2 divisors, whose sum is σ = 6156612002. Its totient is φ = 6156612000.

The previous prime is 6156611987. The next prime is 6156612041. The reversal of 6156612001 is 1002166516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6048950625 + 107661376 = 77775^2 + 10376^2 .

It is a cyclic number.

It is not a de Polignac number, because 6156612001 - 2³¹ = 4009128353 is a prime.

It is not a weakly prime, because it can be changed into another prime (6156612041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078306000 + 3078306001.

It is an arithmetic number, because the mean of its divisors is an integer number (3078306001).

Almost surely, 2^6156612001 is an apocalyptic number.

It is an amenable number.

6156612001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6156612001 is an equidigital number, since it uses as much as digits as its factorization.

6156612001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 6156612001 is about 78464.0809606536. The cubic root of 6156612001 is about 1832.7951552629.

Adding to 6156612001 its reverse (1002166516), we get a palindrome (7158778517).

The spelling of 6156612001 in words is "six billion, one hundred fifty-six million, six hundred twelve thousand, one".