260202142635557 has 2 divisors, whose sum is σ = 260202142635558. Its totient is φ = 260202142635556.

The previous prime is 260202142635527. The next prime is 260202142635583. The reversal of 260202142635557 is 755536241202062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181448604921796 + 78753537713761 = 13470286^2 + 8874319^2 .

It is a cyclic number.

It is not a de Polignac number, because 260202142635557 - 2²⁶ = 260202075526693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260202142635527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130101071317778 + 130101071317779.

It is an arithmetic number, because the mean of its divisors is an integer number (130101071317779).

Almost surely, 2^{260202142635557} is an apocalyptic number.

It is an amenable number.

260202142635557 is a deficient number, since it is larger than the sum of its proper divisors (1).

260202142635557 is an equidigital number, since it uses as much as digits as its factorization.

260202142635557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 260202142635557 in words is "two hundred sixty trillion, two hundred two billion, one hundred forty-two million, six hundred thirty-five thousand, five hundred fifty-seven".