201066051999 has 4 divisors (see below), whose sum is σ = 268088069336. Its totient is φ = 134044034664.

The previous prime is 201066051997. The next prime is 201066052039. The reversal of 201066051999 is 999150660102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201066051999 - 2¹ = 201066051997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201066051997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33511008664 + ... + 33511008669.

It is an arithmetic number, because the mean of its divisors is an integer number (67022017334).

Almost surely, 2^201066051999 is an apocalyptic number.

201066051999 is a deficient number, since it is larger than the sum of its proper divisors (67022017337).

201066051999 is an equidigital number, since it uses as much as digits as its factorization.

201066051999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67022017336.

The product of its (nonzero) digits is 262440, while the sum is 48.

The spelling of 201066051999 in words is "two hundred one billion, sixty-six million, fifty-one thousand, nine hundred ninety-nine".