115513365553 has 4 divisors (see below), whose sum is σ = 115515253348. Its totient is φ = 115511477760.

The previous prime is 115513365521. The next prime is 115513365557. The reversal of 115513365553 is 355563315511.

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 90861853489 + 24651512064 = 301433^2 + 157008^2 .

It is a cyclic number.

It is not a de Polignac number, because 115513365553 - 2⁵ = 115513365521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115513365557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848928 + ... + 975553.

It is an arithmetic number, because the mean of its divisors is an integer number (28878813337).

Almost surely, 2^115513365553 is an apocalyptic number.

It is an amenable number.

115513365553 is a deficient number, since it is larger than the sum of its proper divisors (1887795).

115513365553 is an equidigital number, since it uses as much as digits as its factorization.

115513365553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887794.

The product of its digits is 506250, while the sum is 43.

The spelling of 115513365553 in words is "one hundred fifteen billion, five hundred thirteen million, three hundred sixty-five thousand, five hundred fifty-three".