11001111157 has 2 divisors, whose sum is σ = 11001111158. Its totient is φ = 11001111156.

The previous prime is 11001111137. The next prime is 11001111181. The reversal of 11001111157 is 75111110011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9690236721 + 1310874436 = 98439^2 + 36206^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001111157 - 2¹¹ = 11001109109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001111127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500555578 + 5500555579.

It is an arithmetic number, because the mean of its divisors is an integer number (5500555579).

Almost surely, 2^11001111157 is an apocalyptic number.

It is an amenable number.

11001111157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001111157 is an equidigital number, since it uses as much as digits as its factorization.

11001111157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35, while the sum is 19.

Adding to 11001111157 its reverse (75111110011), we get a palindrome (86112221168).

The spelling of 11001111157 in words is "eleven billion, one million, one hundred eleven thousand, one hundred fifty-seven".