115661522426 has 4 divisors (see below), whose sum is σ = 173492283642. Its totient is φ = 57830761212.

The previous prime is 115661522407. The next prime is 115661522429. The reversal of 115661522426 is 624225166511.

115661522426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 76507006801 + 39154515625 = 276599^2 + 197875^2 .

It is not an unprimeable number, because it can be changed into a prime (115661522429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28915380605 + ... + 28915380608.

Almost surely, 2^115661522426 is an apocalyptic number.

115661522426 is a deficient number, since it is larger than the sum of its proper divisors (57830761216).

115661522426 is an equidigital number, since it uses as much as digits as its factorization.

115661522426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57830761215.

The product of its digits is 172800, while the sum is 41.

Adding to 115661522426 its reverse (624225166511), we get a palindrome (739886688937).

The spelling of 115661522426 in words is "one hundred fifteen billion, six hundred sixty-one million, five hundred twenty-two thousand, four hundred twenty-six".