20775368355 has 32 divisors (see below), whose sum is σ = 39640955904. Its totient is φ = 9084383616.

The previous prime is 20775368353. The next prime is 20775368357. The reversal of 20775368355 is 55386357702.

It is an interprime number because it is at equal distance from previous prime (20775368353) and next prime (20775368357).

It is not a de Polignac number, because 20775368355 - 2¹ = 20775368353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20775368298 and 20775368307.

It is not an unprimeable number, because it can be changed into a prime (20775368353) 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, 4298904 + ... + 4303733.

It is an arithmetic number, because the mean of its divisors is an integer number (1238779872).

Almost surely, 2^20775368355 is an apocalyptic number.

20775368355 is a deficient number, since it is larger than the sum of its proper divisors (18865587549).

20775368355 is a wasteful number, since it uses less digits than its factorization.

20775368355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602675.

The product of its (nonzero) digits is 5292000, while the sum is 51.

The spelling of 20775368355 in words is "twenty billion, seven hundred seventy-five million, three hundred sixty-eight thousand, three hundred fifty-five".