115658532065 has 4 divisors (see below), whose sum is σ = 138790238484. Its totient is φ = 92526825648.

The previous prime is 115658532053. The next prime is 115658532089. The reversal of 115658532065 is 560235856511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63258286144 + 52400245921 = 251512^2 + 228911^2 .

It is a cyclic number.

It is not a de Polignac number, because 115658532065 - 2⁶ = 115658532001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11565853202 + ... + 11565853211.

It is an arithmetic number, because the mean of its divisors is an integer number (34697559621).

Almost surely, 2^115658532065 is an apocalyptic number.

It is an amenable number.

115658532065 is a deficient number, since it is larger than the sum of its proper divisors (23131706419).

115658532065 is an equidigital number, since it uses as much as digits as its factorization.

115658532065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23131706418.

The product of its (nonzero) digits is 1080000, while the sum is 47.

The spelling of 115658532065 in words is "one hundred fifteen billion, six hundred fifty-eight million, five hundred thirty-two thousand, sixty-five".