1564810854241 has 2 divisors, whose sum is σ = 1564810854242. Its totient is φ = 1564810854240.

The previous prime is 1564810854197. The next prime is 1564810854319. The reversal of 1564810854241 is 1424580184651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170431878225 + 394378976016 = 1081865^2 + 627996^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564810854241 - 2¹⁵ = 1564810821473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1564810857241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782405427120 + 782405427121.

It is an arithmetic number, because the mean of its divisors is an integer number (782405427121).

Almost surely, 2^{1564810854241} is an apocalyptic number.

It is an amenable number.

1564810854241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564810854241 is an equidigital number, since it uses as much as digits as its factorization.

1564810854241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 1564810854241 in words is "one trillion, five hundred sixty-four billion, eight hundred ten million, eight hundred fifty-four thousand, two hundred forty-one".