21094201806594 has 64 divisors (see below), whose sum is σ = 48812773976064. Its totient is φ = 5952282109056.

The previous prime is 21094201806571. The next prime is 21094201806611. The reversal of 21094201806594 is 49560810249012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9269587 + ... + 11318729.

It is an arithmetic number, because the mean of its divisors is an integer number (762699593376).

Almost surely, 2^{21094201806594} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21094201806594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24406386988032).

21094201806594 is an abundant number, since it is smaller than the sum of its proper divisors (27718572169470).

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

21094201806594 is a wasteful number, since it uses less digits than its factorization.

21094201806594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052191.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 21094201806594 in words is "twenty-one trillion, ninety-four billion, two hundred one million, eight hundred six thousand, five hundred ninety-four".