16787472073 has 2 divisors, whose sum is σ = 16787472074. Its totient is φ = 16787472072.

The previous prime is 16787472049. The next prime is 16787472089. The reversal of 16787472073 is 37027478761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15309607824 + 1477864249 = 123732^2 + 38443^2 .

It is a cyclic number.

It is not a de Polignac number, because 16787472073 - 2²⁹ = 16250601161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16787472073.

It is not a weakly prime, because it can be changed into another prime (16787472043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8393736036 + 8393736037.

It is an arithmetic number, because the mean of its divisors is an integer number (8393736037).

Almost surely, 2^16787472073 is an apocalyptic number.

It is an amenable number.

16787472073 is a deficient number, since it is larger than the sum of its proper divisors (1).

16787472073 is an equidigital number, since it uses as much as digits as its factorization.

16787472073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2765952, while the sum is 52.

The spelling of 16787472073 in words is "sixteen billion, seven hundred eighty-seven million, four hundred seventy-two thousand, seventy-three".