115615161055 has 4 divisors (see below), whose sum is σ = 138738193272. Its totient is φ = 92492128840.

The previous prime is 115615161043. The next prime is 115615161107. The reversal of 115615161055 is 550161516511.

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

It is not a de Polignac number, because 115615161055 - 2²¹ = 115613063903 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 11561516101 + ... + 11561516110.

It is an arithmetic number, because the mean of its divisors is an integer number (34684548318).

Almost surely, 2^115615161055 is an apocalyptic number.

115615161055 is a deficient number, since it is larger than the sum of its proper divisors (23123032217).

115615161055 is an equidigital number, since it uses as much as digits as its factorization.

115615161055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23123032216.

The product of its (nonzero) digits is 22500, while the sum is 37.

Adding to 115615161055 its reverse (550161516511), we get a palindrome (665776677566).

The spelling of 115615161055 in words is "one hundred fifteen billion, six hundred fifteen million, one hundred sixty-one thousand, fifty-five".