202259442427866 has 24 divisors (see below), whose sum is σ = 438365014866324. Its totient is φ = 67398856767360.

The previous prime is 202259442427849. The next prime is 202259442427879. The reversal of 202259442427866 is 668724244952202.

202259442427866 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 5 + 94 + 42 + 427 + 86 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 199320888791025 + 2938553636841 = 14118105^2 + 1714221^2 .

It is a super-2 number, since 2×202259442427866² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746388425 + ... + 1746504236.

Almost surely, 2^{202259442427866} is an apocalyptic number.

202259442427866 is an abundant number, since it is smaller than the sum of its proper divisors (236105572438458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202259442427866 is a wasteful number, since it uses less digits than its factorization.

202259442427866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492895886 (or 3492895883 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 63.

The spelling of 202259442427866 in words is "two hundred two trillion, two hundred fifty-nine billion, four hundred forty-two million, four hundred twenty-seven thousand, eight hundred sixty-six".