2951268561 has 16 divisors (see below), whose sum is σ = 4629441600. Its totient is φ = 1851776064.

The previous prime is 2951268547. The next prime is 2951268563. The reversal of 2951268561 is 1658621592.

2951268561 is a `hidden beast` number, since 29 + 5 + 1 + 2 + 68 + 561 = 666.

It is not a de Polignac number, because 2951268561 - 2¹⁰ = 2951267537 is a prime.

It is a super-2 number, since 2×2951268561² = 17419972238294021442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2951268563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3214431 + ... + 3215348.

It is an arithmetic number, because the mean of its divisors is an integer number (289340100).

Almost surely, 2^2951268561 is an apocalyptic number.

It is an amenable number.

2951268561 is a deficient number, since it is larger than the sum of its proper divisors (1678173039).

2951268561 is a wasteful number, since it uses less digits than its factorization.

2951268561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6429805 (or 6429799 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 2951268561 is about 54325.5792513987. The cubic root of 2951268561 is about 1434.3976899824.

The spelling of 2951268561 in words is "two billion, nine hundred fifty-one million, two hundred sixty-eight thousand, five hundred sixty-one".