11463728621 has 2 divisors, whose sum is σ = 11463728622. Its totient is φ = 11463728620.

The previous prime is 11463728581. The next prime is 11463728659. The reversal of 11463728621 is 12682736411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8577352996 + 2886375625 = 92614^2 + 53725^2 .

It is a cyclic number.

It is not a de Polignac number, because 11463728621 - 2²⁶ = 11396619757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11463728671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5731864310 + 5731864311.

It is an arithmetic number, because the mean of its divisors is an integer number (5731864311).

Almost surely, 2^11463728621 is an apocalyptic number.

It is an amenable number.

11463728621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11463728621 is an equidigital number, since it uses as much as digits as its factorization.

11463728621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The spelling of 11463728621 in words is "eleven billion, four hundred sixty-three million, seven hundred twenty-eight thousand, six hundred twenty-one".