11617760381 has 2 divisors, whose sum is σ = 11617760382. Its totient is φ = 11617760380.

The previous prime is 11617760359. The next prime is 11617760417. The reversal of 11617760381 is 18306771611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8161496281 + 3456264100 = 90341^2 + 58790^2 .

It is a cyclic number.

It is not a de Polignac number, because 11617760381 - 2¹⁰ = 11617759357 is a prime.

It is a super-2 number, since 2×11617760381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11617760681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5808880190 + 5808880191.

It is an arithmetic number, because the mean of its divisors is an integer number (5808880191).

Almost surely, 2^11617760381 is an apocalyptic number.

It is an amenable number.

11617760381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11617760381 is an equidigital number, since it uses as much as digits as its factorization.

11617760381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 11617760381 in words is "eleven billion, six hundred seventeen million, seven hundred sixty thousand, three hundred eighty-one".