1564839157241 has 2 divisors, whose sum is σ = 1564839157242. Its totient is φ = 1564839157240.

The previous prime is 1564839157199. The next prime is 1564839157253. The reversal of 1564839157241 is 1427519384651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1560010992016 + 4828165225 = 1249004^2 + 69485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564839157241 - 2²² = 1564834962937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1564839157291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782419578620 + 782419578621.

It is an arithmetic number, because the mean of its divisors is an integer number (782419578621).

Almost surely, 2^{1564839157241} is an apocalyptic number.

It is an amenable number.

1564839157241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564839157241 is an equidigital number, since it uses as much as digits as its factorization.

1564839157241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 56.

The spelling of 1564839157241 in words is "one trillion, five hundred sixty-four billion, eight hundred thirty-nine million, one hundred fifty-seven thousand, two hundred forty-one".