260245515553 has 2 divisors, whose sum is σ = 260245515554. Its totient is φ = 260245515552.

The previous prime is 260245515539. The next prime is 260245515557. The reversal of 260245515553 is 355515542062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180635200144 + 79610315409 = 425012^2 + 282153^2 .

It is a cyclic number.

It is not a de Polignac number, because 260245515553 - 2⁵ = 260245515521 is a prime.

It is not a weakly prime, because it can be changed into another prime (260245515557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130122757776 + 130122757777.

It is an arithmetic number, because the mean of its divisors is an integer number (130122757777).

Almost surely, 2^260245515553 is an apocalyptic number.

It is an amenable number.

260245515553 is a deficient number, since it is larger than the sum of its proper divisors (1).

260245515553 is an equidigital number, since it uses as much as digits as its factorization.

260245515553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900000, while the sum is 43.

The spelling of 260245515553 in words is "two hundred sixty billion, two hundred forty-five million, five hundred fifteen thousand, five hundred fifty-three".