118514513641 has 4 divisors (see below), whose sum is σ = 118588172500. Its totient is φ = 118440854784.

The previous prime is 118514513629. The next prime is 118514513653. The reversal of 118514513641 is 146315415811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146315415811 = 77101 ⋅1897711.

It is an interprime number because it is at equal distance from previous prime (118514513629) and next prime (118514513653).

It can be written as a sum of positive squares in 2 ways, for example, as 61601254416 + 56913259225 = 248196^2 + 238565^2 .

It is a cyclic number.

It is not a de Polignac number, because 118514513641 - 2⁹ = 118514513129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118514513594 and 118514513603.

It is not an unprimeable number, because it can be changed into a prime (118514513671) 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, 36827016 + ... + 36830233.

It is an arithmetic number, because the mean of its divisors is an integer number (29647043125).

Almost surely, 2^118514513641 is an apocalyptic number.

It is an amenable number.

118514513641 is a deficient number, since it is larger than the sum of its proper divisors (73658859).

118514513641 is an equidigital number, since it uses as much as digits as its factorization.

118514513641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73658858.

The product of its digits is 57600, while the sum is 40.

The spelling of 118514513641 in words is "one hundred eighteen billion, five hundred fourteen million, five hundred thirteen thousand, six hundred forty-one".