11562606421 has 2 divisors, whose sum is σ = 11562606422. Its totient is φ = 11562606420.

The previous prime is 11562606403. The next prime is 11562606467. The reversal of 11562606421 is 12460626511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11480051025 + 82555396 = 107145^2 + 9086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11562606421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11562603421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781303210 + 5781303211.

It is an arithmetic number, because the mean of its divisors is an integer number (5781303211).

Almost surely, 2^11562606421 is an apocalyptic number.

It is an amenable number.

11562606421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11562606421 is an equidigital number, since it uses as much as digits as its factorization.

11562606421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 11562606421 in words is "eleven billion, five hundred sixty-two million, six hundred six thousand, four hundred twenty-one".