16136924449 has 2 divisors, whose sum is σ = 16136924450. Its totient is φ = 16136924448.

The previous prime is 16136924437. The next prime is 16136924477. The reversal of 16136924449 is 94442963161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15583028224 + 553896225 = 124832^2 + 23535^2 .

It is an emirp because it is prime and its reverse (94442963161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16136924449 - 2⁵ = 16136924417 is a prime.

It is not a weakly prime, because it can be changed into another prime (16136924849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8068462224 + 8068462225.

It is an arithmetic number, because the mean of its divisors is an integer number (8068462225).

Almost surely, 2^16136924449 is an apocalyptic number.

It is an amenable number.

16136924449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16136924449 is an equidigital number, since it uses as much as digits as its factorization.

16136924449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 49.

The spelling of 16136924449 in words is "sixteen billion, one hundred thirty-six million, nine hundred twenty-four thousand, four hundred forty-nine".