2664662551 has 2 divisors, whose sum is σ = 2664662552. Its totient is φ = 2664662550.

The previous prime is 2664662527. The next prime is 2664662591. The reversal of 2664662551 is 1552664662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2664662551 - 2¹⁹ = 2664138263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2664662498 and 2664662507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2664662591) 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 as a sum of consecutive naturals, namely, 1332331275 + 1332331276.

It is an arithmetic number, because the mean of its divisors is an integer number (1332331276).

Almost surely, 2^2664662551 is an apocalyptic number.

2664662551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664662551 is an equidigital number, since it uses as much as digits as its factorization.

2664662551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 43.

The square root of 2664662551 is about 51620.3695356785. The cubic root of 2664662551 is about 1386.3750675895.

The spelling of 2664662551 in words is "two billion, six hundred sixty-four million, six hundred sixty-two thousand, five hundred fifty-one".