261053535116 has 24 divisors (see below), whose sum is σ = 498388359504. Its totient is φ = 118657500480.

The previous prime is 261053535103. The next prime is 261053535121. The reversal of 261053535116 is 611535350162.

It is a self number, because there is not a number n which added to its sum of digits gives 261053535116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526566 + ... + 2627858.

It is an arithmetic number, because the mean of its divisors is an integer number (20766181646).

Almost surely, 2^261053535116 is an apocalyptic number.

It is an amenable number.

261053535116 is a deficient number, since it is larger than the sum of its proper divisors (237334824388).

261053535116 is a wasteful number, since it uses less digits than its factorization.

261053535116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159881 (or 159879 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 261053535116 its reverse (611535350162), we get a palindrome (872588885278).

The spelling of 261053535116 in words is "two hundred sixty-one billion, fifty-three million, five hundred thirty-five thousand, one hundred sixteen".