115061616661005 has 128 divisors (see below), whose sum is σ = 237120303882240. Its totient is φ = 51847447196160.

The previous prime is 115061616660967. The next prime is 115061616661009. The reversal of 115061616661005 is 500166616160511.

It is not a de Polignac number, because 115061616661005 - 2¹⁰ = 115061616659981 is a prime.

It is a super-2 number, since 2×115061616661005² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115061616661009) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 311337409 + ... + 311706761.

It is an arithmetic number, because the mean of its divisors is an integer number (1852502374080).

Almost surely, 2^{115061616661005} is an apocalyptic number.

115061616661005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115061616661005 is an abundant number, since it is smaller than the sum of its proper divisors (122058687221235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115061616661005 is a wasteful number, since it uses less digits than its factorization.

115061616661005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374088 (or 374082 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 115061616661005 in words is "one hundred fifteen trillion, sixty-one billion, six hundred sixteen million, six hundred sixty-one thousand, five".