6609551131 has 2 divisors, whose sum is σ = 6609551132. Its totient is φ = 6609551130.

The previous prime is 6609551107. The next prime is 6609551161. The reversal of 6609551131 is 1311559066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6609551131 - 2¹¹ = 6609549083 is a prime.

It is a super-2 number, since 2×6609551131² = 87372332306606758322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6609551161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304775565 + 3304775566.

It is an arithmetic number, because the mean of its divisors is an integer number (3304775566).

Almost surely, 2^6609551131 is an apocalyptic number.

6609551131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6609551131 is an equidigital number, since it uses as much as digits as its factorization.

6609551131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 6609551131 is about 81299.1459426235. The cubic root of 6609551131 is about 1876.6818574334.

The spelling of 6609551131 in words is "six billion, six hundred nine million, five hundred fifty-one thousand, one hundred thirty-one".