115634505561 has 8 divisors (see below), whose sum is σ = 154191811200. Its totient is φ = 77083435152.

The previous prime is 115634505557. The next prime is 115634505583. The reversal of 115634505561 is 165505436511.

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

It is not a de Polignac number, because 115634505561 - 2² = 115634505557 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (115634505061) 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, 1515361 + ... + 1589838.

It is an arithmetic number, because the mean of its divisors is an integer number (19273976400).

Almost surely, 2^115634505561 is an apocalyptic number.

It is an amenable number.

115634505561 is a deficient number, since it is larger than the sum of its proper divisors (38557305639).

115634505561 is a wasteful number, since it uses less digits than its factorization.

115634505561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117615.

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 115634505561 in words is "one hundred fifteen billion, six hundred thirty-four million, five hundred five thousand, five hundred sixty-one".