118019044521 has 225 divisors, whose sum is σ = 222489096423. Its totient is φ = 62331716160.

The previous prime is 118019044519. The next prime is 118019044523. The reversal of 118019044521 is 125440910811.

The square root of 118019044521 is 343539.

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

118019044521 is a `hidden beast` number, since 1 + 1 + 8 + 0 + 1 + 90 + 44 + 521 = 666.

It is an interprime number because it is at equal distance from previous prime (118019044519) and next prime (118019044523).

It can be written as a sum of positive squares in only one way, i.e., 5686818921 + 112332225600 = 75411^2 + 335160^2 .

It is not a de Polignac number, because 118019044521 - 2¹ = 118019044519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118019044523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 224 ways as a sum of consecutive naturals, for example, 2878513261 + ... + 2878513301.

Almost surely, 2^118019044521 is an apocalyptic number.

118019044521 is the 343539-th square number.

118019044521 is the 171770-th centered octagonal number.

It is an amenable number.

118019044521 is a deficient number, since it is larger than the sum of its proper divisors (104470051902).

118019044521 is an frugal number, since it uses more digits than its factorization.

118019044521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

Multiplying 118019044521 by its sum of digits (36), we get a square (4248685602756 = 2061234²).

The spelling of 118019044521 in words is "one hundred eighteen billion, nineteen million, forty-four thousand, five hundred twenty-one".