115551504442155 has 16 divisors (see below), whose sum is σ = 186788411306784. Its totient is φ = 60992134302720.

The previous prime is 115551504442139. The next prime is 115551504442219. The reversal of 115551504442155 is 551244405155511.

It is not a de Polignac number, because 115551504442155 - 2⁴ = 115551504442139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39708419316 + ... + 39708422225.

It is an arithmetic number, because the mean of its divisors is an integer number (11674275706674).

Almost surely, 2^{115551504442155} is an apocalyptic number.

115551504442155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115551504442155 is a deficient number, since it is larger than the sum of its proper divisors (71236906864629).

115551504442155 is an equidigital number, since it uses as much as digits as its factorization.

115551504442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79416841646.

The product of its (nonzero) digits is 2000000, while the sum is 48.

Adding to 115551504442155 its reverse (551244405155511), we get a palindrome (666795909597666).

The spelling of 115551504442155 in words is "one hundred fifteen trillion, five hundred fifty-one billion, five hundred four million, four hundred forty-two thousand, one hundred fifty-five".