2197314087556 has 81 divisors (see below), whose sum is σ = 4517860593519. Its totient is φ = 932376227328.

The previous prime is 2197314087509. The next prime is 2197314087571. The reversal of 2197314087556 is 6557804137912.

The square root of 2197314087556 is 1482334.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1917853837956 + 279460249600 = 1384866^2 + 528640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2197314087556.

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 26 ways as a sum of consecutive naturals, for example, 2345051920 + ... + 2345052856.

It is a 1-persistent number, because it is pandigital, but 2⋅2197314087556 = 4394628175112 is not.

Almost surely, 2^{2197314087556} is an apocalyptic number.

2197314087556 is the 1482334-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2197314087556

2197314087556 is an abundant number, since it is smaller than the sum of its proper divisors (2320546505963).

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

2197314087556 is an frugal number, since it uses more digits than its factorization.

2197314087556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 2197314087556 in words is "two trillion, one hundred ninety-seven billion, three hundred fourteen million, eighty-seven thousand, five hundred fifty-six".