115521432245 has 16 divisors (see below), whose sum is σ = 141355879920. Its totient is φ = 90599867904.

The previous prime is 115521432199. The next prime is 115521432259. The reversal of 115521432245 is 542234125511.

It can be written as a sum of positive squares in 8 ways, for example, as 6097423396 + 109424008849 = 78086^2 + 330793^2 .

It is a cyclic number.

It is not a de Polignac number, because 115521432245 - 2⁸ = 115521431989 is a prime.

It is a super-2 number, since 2×115521432245² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151601 + ... + 504009.

It is an arithmetic number, because the mean of its divisors is an integer number (8834742495).

Almost surely, 2^115521432245 is an apocalyptic number.

It is an amenable number.

115521432245 is a deficient number, since it is larger than the sum of its proper divisors (25834447675).

115521432245 is a wasteful number, since it uses less digits than its factorization.

115521432245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353704.

The product of its digits is 48000, while the sum is 35.

Adding to 115521432245 its reverse (542234125511), we get a palindrome (657755557756).

The spelling of 115521432245 in words is "one hundred fifteen billion, five hundred twenty-one million, four hundred thirty-two thousand, two hundred forty-five".