16475377993 has 2 divisors, whose sum is σ = 16475377994. Its totient is φ = 16475377992.

The previous prime is 16475377951. The next prime is 16475378071. The reversal of 16475377993 is 39977357461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8641003849 + 7834374144 = 92957^2 + 88512^2 .

It is a cyclic number.

It is not a de Polignac number, because 16475377993 - 2⁹ = 16475377481 is a prime.

It is not a weakly prime, because it can be changed into another prime (16475377493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8237688996 + 8237688997.

It is an arithmetic number, because the mean of its divisors is an integer number (8237688997).

Almost surely, 2^16475377993 is an apocalyptic number.

It is an amenable number.

16475377993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16475377993 is an equidigital number, since it uses as much as digits as its factorization.

16475377993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30005640, while the sum is 61.

The spelling of 16475377993 in words is "sixteen billion, four hundred seventy-five million, three hundred seventy-seven thousand, nine hundred ninety-three".