16634380057 has 2 divisors, whose sum is σ = 16634380058. Its totient is φ = 16634380056.

The previous prime is 16634380051. The next prime is 16634380079. The reversal of 16634380057 is 75008343661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12729254976 + 3905125081 = 112824^2 + 62491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16634380057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16634379995 and 16634380022.

It is not a weakly prime, because it can be changed into another prime (16634380051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8317190028 + 8317190029.

It is an arithmetic number, because the mean of its divisors is an integer number (8317190029).

Almost surely, 2^16634380057 is an apocalyptic number.

It is an amenable number.

16634380057 is a deficient number, since it is larger than the sum of its proper divisors (1).

16634380057 is an equidigital number, since it uses as much as digits as its factorization.

16634380057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 16634380057 in words is "sixteen billion, six hundred thirty-four million, three hundred eighty thousand, fifty-seven".