15116816149 has 2 divisors, whose sum is σ = 15116816150. Its totient is φ = 15116816148.

The previous prime is 15116816131. The next prime is 15116816207. The reversal of 15116816149 is 94161861151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9474102225 + 5642713924 = 97335^2 + 75118^2 .

It is a cyclic number.

It is not a de Polignac number, because 15116816149 - 2³¹ = 12969332501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15116816549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7558408074 + 7558408075.

It is an arithmetic number, because the mean of its divisors is an integer number (7558408075).

Almost surely, 2^15116816149 is an apocalyptic number.

It is an amenable number.

15116816149 is a deficient number, since it is larger than the sum of its proper divisors (1).

15116816149 is an equidigital number, since it uses as much as digits as its factorization.

15116816149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 43.

The spelling of 15116816149 in words is "fifteen billion, one hundred sixteen million, eight hundred sixteen thousand, one hundred forty-nine".