16263415249 has 2 divisors, whose sum is σ = 16263415250. Its totient is φ = 16263415248.

The previous prime is 16263415243. The next prime is 16263415327. The reversal of 16263415249 is 94251436261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16073168400 + 190246849 = 126780^2 + 13793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16263415249 is a prime.

It is a super-2 number, since 2×16263415249² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16263415243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8131707624 + 8131707625.

It is an arithmetic number, because the mean of its divisors is an integer number (8131707625).

Almost surely, 2^16263415249 is an apocalyptic number.

It is an amenable number.

16263415249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16263415249 is an equidigital number, since it uses as much as digits as its factorization.

16263415249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The spelling of 16263415249 in words is "sixteen billion, two hundred sixty-three million, four hundred fifteen thousand, two hundred forty-nine".