11508378149 has 2 divisors, whose sum is σ = 11508378150. Its totient is φ = 11508378148.

The previous prime is 11508378137. The next prime is 11508378179. The reversal of 11508378149 is 94187380511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10976752900 + 531625249 = 104770^2 + 23057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11508378149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11508378179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5754189074 + 5754189075.

It is an arithmetic number, because the mean of its divisors is an integer number (5754189075).

Almost surely, 2^11508378149 is an apocalyptic number.

It is an amenable number.

11508378149 is a deficient number, since it is larger than the sum of its proper divisors (1).

11508378149 is an equidigital number, since it uses as much as digits as its factorization.

11508378149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 11508378149 in words is "eleven billion, five hundred eight million, three hundred seventy-eight thousand, one hundred forty-nine".