11663915629 has 2 divisors, whose sum is σ = 11663915630. Its totient is φ = 11663915628.

The previous prime is 11663915573. The next prime is 11663915671. The reversal of 11663915629 is 92651936611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7321369225 + 4342546404 = 85565^2 + 65898^2 .

It is a cyclic number.

It is not a de Polignac number, because 11663915629 - 2⁹ = 11663915117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11663915699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831957814 + 5831957815.

It is an arithmetic number, because the mean of its divisors is an integer number (5831957815).

Almost surely, 2^11663915629 is an apocalyptic number.

It is an amenable number.

11663915629 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663915629 is an equidigital number, since it uses as much as digits as its factorization.

11663915629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 49.

The spelling of 11663915629 in words is "eleven billion, six hundred sixty-three million, nine hundred fifteen thousand, six hundred twenty-nine".