11553640771 has 2 divisors, whose sum is σ = 11553640772. Its totient is φ = 11553640770.

The previous prime is 11553640621. The next prime is 11553640789. The reversal of 11553640771 is 17704635511.

It is a strong prime.

It is an emirp because it is prime and its reverse (17704635511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11553640771 is a prime.

It is not a weakly prime, because it can be changed into another prime (11553640271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776820385 + 5776820386.

It is an arithmetic number, because the mean of its divisors is an integer number (5776820386).

Almost surely, 2^11553640771 is an apocalyptic number.

11553640771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11553640771 is an equidigital number, since it uses as much as digits as its factorization.

11553640771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 11553640771 in words is "eleven billion, five hundred fifty-three million, six hundred forty thousand, seven hundred seventy-one".