261502113035 has 4 divisors (see below), whose sum is σ = 313802535648. Its totient is φ = 209201690424.

The previous prime is 261502113007. The next prime is 261502113043. The reversal of 261502113035 is 530311205162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 530311205162 = 2 ⋅265155602581.

It is a cyclic number.

It is not a de Polignac number, because 261502113035 - 2²⁰ = 261501064459 is a prime.

It is a super-2 number, since 2×261502113035² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261502112989 and 261502113007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26150211299 + ... + 26150211308.

It is an arithmetic number, because the mean of its divisors is an integer number (78450633912).

Almost surely, 2^261502113035 is an apocalyptic number.

261502113035 is a deficient number, since it is larger than the sum of its proper divisors (52300422613).

261502113035 is an equidigital number, since it uses as much as digits as its factorization.

261502113035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52300422612.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 261502113035 its reverse (530311205162), we get a palindrome (791813318197).

The spelling of 261502113035 in words is "two hundred sixty-one billion, five hundred two million, one hundred thirteen thousand, thirty-five".