260137007142557 has 4 divisors (see below), whose sum is σ = 260146028116956. Its totient is φ = 260127986168160.

The previous prime is 260137007142521. The next prime is 260137007142629. The reversal of 260137007142557 is 755241700731062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167830625862916 + 92306381279641 = 12954946^2 + 9607621^2 .

It is a cyclic number.

It is not a de Polignac number, because 260137007142557 - 2⁸ = 260137007142301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260137007145557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4510443944 + ... + 4510501617.

It is an arithmetic number, because the mean of its divisors is an integer number (65036507029239).

Almost surely, 2^{260137007142557} is an apocalyptic number.

It is an amenable number.

260137007142557 is a deficient number, since it is larger than the sum of its proper divisors (9020974399).

260137007142557 is an equidigital number, since it uses as much as digits as its factorization.

260137007142557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020974398.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 260137007142557 in words is "two hundred sixty trillion, one hundred thirty-seven billion, seven million, one hundred forty-two thousand, five hundred fifty-seven".