2664153421 has 2 divisors, whose sum is σ = 2664153422. Its totient is φ = 2664153420.

The previous prime is 2664153341. The next prime is 2664153449. The reversal of 2664153421 is 1243514662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1961161225 + 702992196 = 44285^2 + 26514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2664153421 - 2¹³ = 2664145229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2664153461) 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, 1332076710 + 1332076711.

It is an arithmetic number, because the mean of its divisors is an integer number (1332076711).

Almost surely, 2^2664153421 is an apocalyptic number.

It is an amenable number.

2664153421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664153421 is an equidigital number, since it uses as much as digits as its factorization.

2664153421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 2664153421 is about 51615.4378166068. The cubic root of 2664153421 is about 1386.2867649641.

The spelling of 2664153421 in words is "two billion, six hundred sixty-four million, one hundred fifty-three thousand, four hundred twenty-one".