20763660704656 has 45 divisors (see below), whose sum is σ = 40635451857553. Its totient is φ = 10278128609600.

The previous prime is 20763660704651. The next prime is 20763660704713. The reversal of 20763660704656 is 65640706636702.

The square root of 20763660704656 is 4556716.

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

It can be written as a sum of positive squares in only one way, i.e., 19949479322256 + 814181382400 = 4466484^2 + 902320^2 .

It is a super-2 number, since 2×20763660704656² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20763660704656.

It is not an unprimeable number, because it can be changed into a prime (20763660704651) 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 8 ways as a sum of consecutive naturals, for example, 1840907625 + ... + 1840918903.

Almost surely, 2^{20763660704656} is an apocalyptic number.

20763660704656 is the 4556716-th square number.

It is an amenable number.

20763660704656 is a deficient number, since it is larger than the sum of its proper divisors (19871791152897).

20763660704656 is an frugal number, since it uses more digits than its factorization.

20763660704656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22768 (or 11382 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 58.

The spelling of 20763660704656 in words is "twenty trillion, seven hundred sixty-three billion, six hundred sixty million, seven hundred four thousand, six hundred fifty-six".