118511446665 has 64 divisors (see below), whose sum is σ = 196647542784. Its totient is φ = 60904908288.

The previous prime is 118511446663. The next prime is 118511446679. The reversal of 118511446665 is 566644115811.

It is not a de Polignac number, because 118511446665 - 2¹ = 118511446663 is a prime.

It is a super-2 number, since 2×118511446665² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118511446663) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55300584 + ... + 55302726.

It is an arithmetic number, because the mean of its divisors is an integer number (3072617856).

Almost surely, 2^118511446665 is an apocalyptic number.

118511446665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118511446665 is a deficient number, since it is larger than the sum of its proper divisors (78136096119).

118511446665 is a wasteful number, since it uses less digits than its factorization.

118511446665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310.

The product of its digits is 691200, while the sum is 48.

The spelling of 118511446665 in words is "one hundred eighteen billion, five hundred eleven million, four hundred forty-six thousand, six hundred sixty-five".