16477122997 has 2 divisors, whose sum is σ = 16477122998. Its totient is φ = 16477122996.

The previous prime is 16477122979. The next prime is 16477123021. The reversal of 16477122997 is 79922177461.

Together with previous prime (16477122979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10748298276 + 5728824721 = 103674^2 + 75689^2 .

It is a cyclic number.

It is not a de Polignac number, because 16477122997 - 2²⁷ = 16342905269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16477122947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8238561498 + 8238561499.

It is an arithmetic number, because the mean of its divisors is an integer number (8238561499).

Almost surely, 2^16477122997 is an apocalyptic number.

It is an amenable number.

16477122997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16477122997 is an equidigital number, since it uses as much as digits as its factorization.

16477122997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 55.

The spelling of 16477122997 in words is "sixteen billion, four hundred seventy-seven million, one hundred twenty-two thousand, nine hundred ninety-seven".