845084632861 has 16 divisors (see below), whose sum is σ = 1008452384640. Its totient is φ = 692844102720.

The previous prime is 845084632853. The next prime is 845084632867. The reversal of 845084632861 is 168236480548.

It is not a de Polignac number, because 845084632861 - 2³ = 845084632853 is a prime.

It is a super-2 number, since 2×845084632861² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845084632867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19431450 + ... + 19474891.

It is an arithmetic number, because the mean of its divisors is an integer number (63028274040).

Almost surely, 2^845084632861 is an apocalyptic number.

It is an amenable number.

845084632861 is a deficient number, since it is larger than the sum of its proper divisors (163367751779).

845084632861 is a wasteful number, since it uses less digits than its factorization.

845084632861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38906484.

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 845084632861 in words is "eight hundred forty-five billion, eighty-four million, six hundred thirty-two thousand, eight hundred sixty-one".