11660272357 has 2 divisors, whose sum is σ = 11660272358. Its totient is φ = 11660272356.

The previous prime is 11660272339. The next prime is 11660272361. The reversal of 11660272357 is 75327206611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8458296961 + 3201975396 = 91969^2 + 56586^2 .

It is an emirp because it is prime and its reverse (75327206611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11660272357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11660272957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830136178 + 5830136179.

It is an arithmetic number, because the mean of its divisors is an integer number (5830136179).

Almost surely, 2^11660272357 is an apocalyptic number.

It is an amenable number.

11660272357 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660272357 is an equidigital number, since it uses as much as digits as its factorization.

11660272357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

Adding to 11660272357 its reverse (75327206611), we get a palindrome (86987478968).

The spelling of 11660272357 in words is "eleven billion, six hundred sixty million, two hundred seventy-two thousand, three hundred fifty-seven".