20763855355 has 8 divisors (see below), whose sum is σ = 24919913952. Its totient is φ = 16608892608.

The previous prime is 20763855353. The next prime is 20763855419. The reversal of 20763855355 is 55355836702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20763855355 - 2¹ = 20763855353 is a prime.

It is a super-2 number, since 2×20763855355² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20763855299 and 20763855308.

It is not an unprimeable number, because it can be changed into a prime (20763855353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231682 + ... + 308551.

It is an arithmetic number, because the mean of its divisors is an integer number (3114989244).

Almost surely, 2^20763855355 is an apocalyptic number.

20763855355 is a deficient number, since it is larger than the sum of its proper divisors (4156058597).

20763855355 is an equidigital number, since it uses as much as digits as its factorization.

20763855355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547925.

The product of its (nonzero) digits is 3780000, while the sum is 49.

The spelling of 20763855355 in words is "twenty billion, seven hundred sixty-three million, eight hundred fifty-five thousand, three hundred fifty-five".