2664657821627 has 2 divisors, whose sum is σ = 2664657821628. Its totient is φ = 2664657821626.

The previous prime is 2664657821591. The next prime is 2664657821647. The reversal of 2664657821627 is 7261287564662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2664657821627 - 2¹⁰ = 2664657820603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2664657821627.

It is not a weakly prime, because it can be changed into another prime (2664657821647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332328910813 + 1332328910814.

It is an arithmetic number, because the mean of its divisors is an integer number (1332328910814).

Almost surely, 2^{2664657821627} is an apocalyptic number.

2664657821627 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664657821627 is an equidigital number, since it uses as much as digits as its factorization.

2664657821627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 62.

The spelling of 2664657821627 in words is "two trillion, six hundred sixty-four billion, six hundred fifty-seven million, eight hundred twenty-one thousand, six hundred twenty-seven".