2861812784094 has 64 divisors (see below), whose sum is σ = 6418583769600. Its totient is φ = 843004955520.

The previous prime is 2861812784093. The next prime is 2861812784099. The reversal of 2861812784094 is 4904872181682.

It is a super-2 number, since 2×2861812784094² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861812784093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2133007 + ... + 3205205.

It is an arithmetic number, because the mean of its divisors is an integer number (100290371400).

Almost surely, 2^{2861812784094} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2861812784094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3209291884800).

2861812784094 is an abundant number, since it is smaller than the sum of its proper divisors (3556770985506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2861812784094 is a wasteful number, since it uses less digits than its factorization.

2861812784094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073345.

The product of its (nonzero) digits is 12386304, while the sum is 60.

The spelling of 2861812784094 in words is "two trillion, eight hundred sixty-one billion, eight hundred twelve million, seven hundred eighty-four thousand, ninety-four".