2321025400656 has 100 divisors (see below), whose sum is σ = 6721174960500. Its totient is φ = 773277331968.

The previous prime is 2321025400637. The next prime is 2321025400679. The reversal of 2321025400656 is 6560045201232.

2321025400656 is a `hidden beast` number, since 2 + 3 + 2 + 102 + 540 + 0 + 6 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1863454327056 + 457571073600 = 1365084^2 + 676440^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2321025400656.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 2066460 + ... + 2985348.

It is an arithmetic number, because the mean of its divisors is an integer number (67211749605).

Almost surely, 2^{2321025400656} 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 2321025400656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3360587480250).

2321025400656 is an abundant number, since it is smaller than the sum of its proper divisors (4400149559844).

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

2321025400656 is a wasteful number, since it uses less digits than its factorization.

2321025400656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920858 (or 920843 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 2321025400656 in words is "two trillion, three hundred twenty-one billion, twenty-five million, four hundred thousand, six hundred fifty-six".