205514963851 has 2 divisors, whose sum is σ = 205514963852. Its totient is φ = 205514963850.

The previous prime is 205514963777. The next prime is 205514963869. The reversal of 205514963851 is 158369415502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205514963851 - 2¹⁷ = 205514832779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205514963795 and 205514963804.

It is not a weakly prime, because it can be changed into another prime (205514963651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102757481925 + 102757481926.

It is an arithmetic number, because the mean of its divisors is an integer number (102757481926).

Almost surely, 2^205514963851 is an apocalyptic number.

205514963851 is a deficient number, since it is larger than the sum of its proper divisors (1).

205514963851 is an equidigital number, since it uses as much as digits as its factorization.

205514963851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 49.

The spelling of 205514963851 in words is "two hundred five billion, five hundred fourteen million, nine hundred sixty-three thousand, eight hundred fifty-one".