20451758059044 has 243 divisors, whose sum is σ = 57570739900947. Its totient is φ = 6118864322688.

The previous prime is 20451758059021. The next prime is 20451758059123. The reversal of 20451758059044 is 44095085715402.

The square root of 20451758059044 is 4522362.

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

20451758059044 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 1 + 7 + 5 + 8 + 0 + 590 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 84950097444 + 20366807961600 = 291462^2 + 4512960^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 13051535949 + ... + 13051537515.

Almost surely, 2^{20451758059044} is an apocalyptic number.

20451758059044 is the 4522362-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20451758059044

20451758059044 is an abundant number, since it is smaller than the sum of its proper divisors (37118981841903).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20451758059044 is a wasteful number, since it uses less digits than its factorization.

20451758059044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 20451758059044 in words is "twenty trillion, four hundred fifty-one billion, seven hundred fifty-eight million, fifty-nine thousand, forty-four".