118204628481 has 15 divisors (see below), whose sum is σ = 176581906963. Its totient is φ = 78801022800.

The previous prime is 118204628473. The next prime is 118204628491. The reversal of 118204628481 is 184826402811.

The square root of 118204628481 is 343809.

It is a perfect power (a square), and thus also a powerful number.

118204628481 is a `hidden beast` number, since 1 + 18 + 2 + 0 + 4 + 628 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45692910081 + 72511718400 = 213759^2 + 269280^2 .

It is not a de Polignac number, because 118204628481 - 2³ = 118204628473 is a prime.

It is a super-2 number, since 2×118204628481² (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 (118204628471) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3075181 + ... + 3113381.

Almost surely, 2^118204628481 is an apocalyptic number.

118204628481 is the 343809-th square number.

118204628481 is the 171905-th centered octagonal number.

It is an amenable number.

118204628481 is a deficient number, since it is larger than the sum of its proper divisors (58377278482).

118204628481 is an frugal number, since it uses more digits than its factorization.

118204628481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76414 (or 38204 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 118204628481 in words is "one hundred eighteen billion, two hundred four million, six hundred twenty-eight thousand, four hundred eighty-one".