2664885251 has 4 divisors (see below), whose sum is σ = 3045583152. Its totient is φ = 2284187352.

The previous prime is 2664885247. The next prime is 2664885277. The reversal of 2664885251 is 1525884662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2664885251 - 2² = 2664885247 is a prime.

It is a super-2 number, since 2×2664885251² = 14203226801994666002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2664885196 and 2664885205.

It is not an unprimeable number, because it can be changed into a prime (2664885211) 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 3 ways as a sum of consecutive naturals, for example, 190348940 + ... + 190348953.

It is an arithmetic number, because the mean of its divisors is an integer number (761395788).

Almost surely, 2^2664885251 is an apocalyptic number.

2664885251 is a deficient number, since it is larger than the sum of its proper divisors (380697901).

2664885251 is an equidigital number, since it uses as much as digits as its factorization.

2664885251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380697900.

The product of its digits is 921600, while the sum is 47.

The square root of 2664885251 is about 51622.5265848157. The cubic root of 2664885251 is about 1386.4136887559.

The spelling of 2664885251 in words is "two billion, six hundred sixty-four million, eight hundred eighty-five thousand, two hundred fifty-one".