2189026362656 has 192 divisors, whose sum is σ = 5260889088000. Its totient is φ = 875734778880.

The previous prime is 2189026362629. The next prime is 2189026362661. The reversal of 2189026362656 is 6562636209812.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 171131621 + ... + 171144411.

It is an arithmetic number, because the mean of its divisors is an integer number (27400464000).

Almost surely, 2^{2189026362656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189026362656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630444544000).

2189026362656 is an abundant number, since it is smaller than the sum of its proper divisors (3071862725344).

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

2189026362656 is a wasteful number, since it uses less digits than its factorization.

2189026362656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13415 (or 13407 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 2189026362656 in words is "two trillion, one hundred eighty-nine billion, twenty-six million, three hundred sixty-two thousand, six hundred fifty-six".