213065914987 has 2 divisors, whose sum is σ = 213065914988. Its totient is φ = 213065914986.

The previous prime is 213065914981. The next prime is 213065915063. The reversal of 213065914987 is 789419560312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213065914987 - 2³ = 213065914979 is a prime.

It is a super-2 number, since 2×213065914987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213065914981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106532957493 + 106532957494.

It is an arithmetic number, because the mean of its divisors is an integer number (106532957494).

It is a 1-persistent number, because it is pandigital, but 2⋅213065914987 = 426131829974 is not.

Almost surely, 2^213065914987 is an apocalyptic number.

213065914987 is a deficient number, since it is larger than the sum of its proper divisors (1).

213065914987 is an equidigital number, since it uses as much as digits as its factorization.

213065914987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 213065914987 in words is "two hundred thirteen billion, sixty-five million, nine hundred fourteen thousand, nine hundred eighty-seven".