201285006787 has 4 divisors (see below), whose sum is σ = 208225869120. Its totient is φ = 194344144456.

The previous prime is 201285006779. The next prime is 201285006833. The reversal of 201285006787 is 787600582102.

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

It is a cyclic number.

It is not a de Polignac number, because 201285006787 - 2³ = 201285006779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201285006757) 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, 3470431123 + ... + 3470431180.

It is an arithmetic number, because the mean of its divisors is an integer number (52056467280).

Almost surely, 2^201285006787 is an apocalyptic number.

201285006787 is a deficient number, since it is larger than the sum of its proper divisors (6940862333).

201285006787 is an equidigital number, since it uses as much as digits as its factorization.

201285006787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940862332.

The product of its (nonzero) digits is 376320, while the sum is 46.

Adding to 201285006787 its reverse (787600582102), we get a palindrome (988885588889).

The spelling of 201285006787 in words is "two hundred one billion, two hundred eighty-five million, six thousand, seven hundred eighty-seven".