115116561605551 has 8 divisors (see below), whose sum is σ = 125582316822144. Its totient is φ = 104650908597720.

The previous prime is 115116561605503. The next prime is 115116561605587. The reversal of 115116561605551 is 155506165611511.

It is a happy number.

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 115116561605551 - 2¹⁷ = 115116561474479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115116561605495 and 115116561605504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115116561605351) 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, 23187705 + ... + 27711058.

It is an arithmetic number, because the mean of its divisors is an integer number (15697789602768).

Almost surely, 2^{115116561605551} is an apocalyptic number.

115116561605551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115116561605551 is a deficient number, since it is larger than the sum of its proper divisors (10465755216593).

115116561605551 is a wasteful number, since it uses less digits than its factorization.

115116561605551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51104381.

The product of its (nonzero) digits is 675000, while the sum is 49.

The spelling of 115116561605551 in words is "one hundred fifteen trillion, one hundred sixteen billion, five hundred sixty-one million, six hundred five thousand, five hundred fifty-one".