851001851001 has 32 divisors (see below), whose sum is σ = 1150822797696. Its totient is φ = 559310400000.

The previous prime is 851001850997. The next prime is 851001851083. The reversal of 851001851001 is 100158100158.

It is not a de Polignac number, because 851001851001 - 2² = 851001850997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 851001851001.

It is not an unprimeable number, because it can be changed into a prime (851001851101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85946151 + ... + 85956051.

It is an arithmetic number, because the mean of its divisors is an integer number (35963212428).

Almost surely, 2^851001851001 is an apocalyptic number.

It is an amenable number.

851001851001 is a deficient number, since it is larger than the sum of its proper divisors (299820946695).

851001851001 is a wasteful number, since it uses less digits than its factorization.

851001851001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193.

The product of its (nonzero) digits is 1600, while the sum is 30.

Adding to 851001851001 its reverse (100158100158), we get a palindrome (951159951159).

The spelling of 851001851001 in words is "eight hundred fifty-one billion, one million, eight hundred fifty-one thousand, one".