115511305510505 has 8 divisors (see below), whose sum is σ = 138613803518472. Its totient is φ = 92408886471168.

The previous prime is 115511305510501. The next prime is 115511305510537. The reversal of 115511305510505 is 505015503115511.

It can be written as a sum of positive squares in 4 ways, for example, as 11999483056729 + 103511822453776 = 3464027^2 + 10174076^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115511305510505 - 2² = 115511305510501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115511305510501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16474952 + ... + 22415321.

It is an arithmetic number, because the mean of its divisors is an integer number (17326725439809).

Almost surely, 2^{115511305510505} is an apocalyptic number.

It is an amenable number.

115511305510505 is a deficient number, since it is larger than the sum of its proper divisors (23102498007967).

115511305510505 is an equidigital number, since it uses as much as digits as its factorization.

115511305510505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39484315.

The product of its (nonzero) digits is 46875, while the sum is 38.

The spelling of 115511305510505 in words is "one hundred fifteen trillion, five hundred eleven billion, three hundred five million, five hundred ten thousand, five hundred five".