1165550642301 has 4 divisors (see below), whose sum is σ = 1554067523072. Its totient is φ = 777033761532.

The previous prime is 1165550642251. The next prime is 1165550642303. The reversal of 1165550642301 is 1032460555611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1165550642301 - 2¹¹ = 1165550640253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165550642301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165550642303) 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, 194258440381 + ... + 194258440386.

It is an arithmetic number, because the mean of its divisors is an integer number (388516880768).

Almost surely, 2^{1165550642301} is an apocalyptic number.

It is an amenable number.

1165550642301 is a deficient number, since it is larger than the sum of its proper divisors (388516880771).

1165550642301 is an equidigital number, since it uses as much as digits as its factorization.

1165550642301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388516880770.

The product of its (nonzero) digits is 108000, while the sum is 39.

It can be divided in two parts, 1165550 and 642301, that added together give a triangular number (1807851 = T₁₉₀₁).

The spelling of 1165550642301 in words is "one trillion, one hundred sixty-five billion, five hundred fifty million, six hundred forty-two thousand, three hundred one".