200203212099978 has 48 divisors (see below), whose sum is σ = 442038096247176. Its totient is φ = 65463403299840.

The previous prime is 200203212099977. The next prime is 200203212100121. The reversal of 200203212099978 is 879990212302002.

200203212099978 is a `hidden beast` number, since 2 + 0 + 0 + 20 + 321 + 209 + 9 + 97 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 164139067552329 + 36064144547649 = 12811677^2 + 6005343^2 .

It is a super-2 number, since 2×200203212099978² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (200203212099971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13738275 + ... + 24272342.

Almost surely, 2^{200203212099978} is an apocalyptic number.

200203212099978 is an abundant number, since it is smaller than the sum of its proper divisors (241834884147198).

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

200203212099978 is a wasteful number, since it uses less digits than its factorization.

200203212099978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38016199 (or 38016196 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 200203212099978 in words is "two hundred trillion, two hundred three billion, two hundred twelve million, ninety-nine thousand, nine hundred seventy-eight".