5901663683556 has 225 divisors, whose sum is σ = 16427536826239. Its totient is φ = 1847537659008.

The previous prime is 5901663683543. The next prime is 5901663683557. The reversal of 5901663683556 is 6553863661095.

It is a happy number.

The square root of 5901663683556 is 2429334.

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

5901663683556 is a `hidden beast` number, since 5 + 9 + 0 + 16 + 6 + 3 + 68 + 3 + 556 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1831599529956 + 4070064153600 = 1353366^2 + 2017440^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5901663683493 and 5901663683502.

It is not an unprimeable number, because it can be changed into a prime (5901663683557) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 12637395235 + ... + 12637395701.

Almost surely, 2^{5901663683556} is an apocalyptic number.

5901663683556 is the 2429334-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5901663683556

5901663683556 is an abundant number, since it is smaller than the sum of its proper divisors (10525873142683).

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

5901663683556 is an frugal number, since it uses more digits than its factorization.

5901663683556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 104976000, while the sum is 63.

The spelling of 5901663683556 in words is "five trillion, nine hundred one billion, six hundred sixty-three million, six hundred eighty-three thousand, five hundred fifty-six".