11770656243921 has 27 divisors (see below), whose sum is σ = 17427482435857. Its totient is φ = 7655436911040.

The previous prime is 11770656243911. The next prime is 11770656243923. The reversal of 11770656243921 is 12934265607711.

The square root of 11770656243921 is 3430839.

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

11770656243921 is a `hidden beast` number, since 1 + 1 + 7 + 7 + 0 + 6 + 5 + 624 + 3 + 9 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 452572380225 + 11318083863696 = 672735^2 + 3364236^2 .

It is not a de Polignac number, because 11770656243921 - 2³⁷ = 11633217290449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11770656243923) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 421979251 + ... + 422007143.

Almost surely, 2^{11770656243921} is an apocalyptic number.

11770656243921 is the 3430839-th square number.

11770656243921 is the 1715420-th centered octagonal number.

It is an amenable number.

11770656243921 is a deficient number, since it is larger than the sum of its proper divisors (5656826191936).

11770656243921 is an frugal number, since it uses more digits than its factorization.

11770656243921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55874 (or 27937 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 11770656243921 in words is "eleven trillion, seven hundred seventy billion, six hundred fifty-six million, two hundred forty-three thousand, nine hundred twenty-one".