11557742101 has 2 divisors, whose sum is σ = 11557742102. Its totient is φ = 11557742100.

The previous prime is 11557742093. The next prime is 11557742137. The reversal of 11557742101 is 10124775511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11489696100 + 68046001 = 107190^2 + 8249^2 .

It is an emirp because it is prime and its reverse (10124775511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11557742101 - 2³ = 11557742093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11557742201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778871050 + 5778871051.

It is an arithmetic number, because the mean of its divisors is an integer number (5778871051).

Almost surely, 2^11557742101 is an apocalyptic number.

It is an amenable number.

11557742101 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557742101 is an equidigital number, since it uses as much as digits as its factorization.

11557742101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 34.

The spelling of 11557742101 in words is "eleven billion, five hundred fifty-seven million, seven hundred forty-two thousand, one hundred one".