118665501001 has 16 divisors (see below), whose sum is σ = 122183770896. Its totient is φ = 115198160896.

The previous prime is 118665500981. The next prime is 118665501023. The reversal of 118665501001 is 100105566811.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2504502025 + 116160998976 = 50045^2 + 340824^2 .

It is a cyclic number.

It is not a de Polignac number, because 118665501001 - 2⁹ = 118665500489 is a prime.

It is a super-2 number, since 2×118665501001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118665507001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3534771 + ... + 3568183.

It is an arithmetic number, because the mean of its divisors is an integer number (7636485681).

Almost surely, 2^118665501001 is an apocalyptic number.

It is an amenable number.

118665501001 is a deficient number, since it is larger than the sum of its proper divisors (3518269895).

118665501001 is a wasteful number, since it uses less digits than its factorization.

118665501001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34172.

The product of its (nonzero) digits is 7200, while the sum is 34.

The spelling of 118665501001 in words is "one hundred eighteen billion, six hundred sixty-five million, five hundred one thousand, one".