200187019987 has 2 divisors, whose sum is σ = 200187019988. Its totient is φ = 200187019986.

The previous prime is 200187019973. The next prime is 200187020023. The reversal of 200187019987 is 789910781002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200187019987 is a prime.

It is not a weakly prime, because it can be changed into another prime (200187019957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100093509993 + 100093509994.

It is an arithmetic number, because the mean of its divisors is an integer number (100093509994).

Almost surely, 2^200187019987 is an apocalyptic number.

200187019987 is a deficient number, since it is larger than the sum of its proper divisors (1).

200187019987 is an equidigital number, since it uses as much as digits as its factorization.

200187019987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 52.

The spelling of 200187019987 in words is "two hundred billion, one hundred eighty-seven million, nineteen thousand, nine hundred eighty-seven".