115628303632661 has 4 divisors (see below), whose sum is σ = 115628431418892. Its totient is φ = 115628175846432.

The previous prime is 115628303632657. The next prime is 115628303632759. The reversal of 115628303632661 is 166236303826511.

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 12134814052036 + 103493489580625 = 3483506^2 + 10173175^2 .

It is a cyclic number.

It is not a de Polignac number, because 115628303632661 - 2² = 115628303632657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115628303632631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62526080 + ... + 64348793.

It is an arithmetic number, because the mean of its divisors is an integer number (28907107854723).

Almost surely, 2^{115628303632661} is an apocalyptic number.

It is an amenable number.

115628303632661 is a deficient number, since it is larger than the sum of its proper divisors (127786231).

115628303632661 is an equidigital number, since it uses as much as digits as its factorization.

115628303632661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127786230.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 115628303632661 in words is "one hundred fifteen trillion, six hundred twenty-eight billion, three hundred three million, six hundred thirty-two thousand, six hundred sixty-one".