851961100911 has 8 divisors (see below), whose sum is σ = 1136020134144. Its totient is φ = 567938067480.

The previous prime is 851961100889. The next prime is 851961100919. The reversal of 851961100911 is 119001169158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 851961100911 - 2⁶ = 851961100847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851961100919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8944681 + ... + 9039426.

It is an arithmetic number, because the mean of its divisors is an integer number (142002516768).

Almost surely, 2^851961100911 is an apocalyptic number.

851961100911 is a deficient number, since it is larger than the sum of its proper divisors (284059033233).

851961100911 is a wasteful number, since it uses less digits than its factorization.

851961100911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17999901.

The product of its (nonzero) digits is 19440, while the sum is 42.

The spelling of 851961100911 in words is "eight hundred fifty-one billion, nine hundred sixty-one million, one hundred thousand, nine hundred eleven".