20730580536261 has 32 divisors (see below), whose sum is σ = 29247644160000. Its totient is φ = 13024583085888.

The previous prime is 20730580536233. The next prime is 20730580536277. The reversal of 20730580536261 is 16263508503702.

It is a happy number.

It is not a de Polignac number, because 20730580536261 - 2¹⁰ = 20730580535237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20730580536261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730580536961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56976031 + ... + 57338723.

It is an arithmetic number, because the mean of its divisors is an integer number (913988880000).

Almost surely, 2^{20730580536261} is an apocalyptic number.

It is an amenable number.

20730580536261 is a deficient number, since it is larger than the sum of its proper divisors (8517063623739).

20730580536261 is a wasteful number, since it uses less digits than its factorization.

20730580536261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367953.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 20730580536261 in words is "twenty trillion, seven hundred thirty billion, five hundred eighty million, five hundred thirty-six thousand, two hundred sixty-one".