2163441664457 has 2 divisors, whose sum is σ = 2163441664458. Its totient is φ = 2163441664456.

The previous prime is 2163441664381. The next prime is 2163441664481. The reversal of 2163441664457 is 7544661443612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1233796663696 + 929645000761 = 1110764^2 + 964181^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163441664457 - 2¹⁸ = 2163441402313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2163441664399 and 2163441664408.

It is not a weakly prime, because it can be changed into another prime (2163441664757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081720832228 + 1081720832229.

It is an arithmetic number, because the mean of its divisors is an integer number (1081720832229).

Almost surely, 2^{2163441664457} is an apocalyptic number.

It is an amenable number.

2163441664457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163441664457 is an equidigital number, since it uses as much as digits as its factorization.

2163441664457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 53.

The spelling of 2163441664457 in words is "two trillion, one hundred sixty-three billion, four hundred forty-one million, six hundred sixty-four thousand, four hundred fifty-seven".