16422997477 has 2 divisors, whose sum is σ = 16422997478. Its totient is φ = 16422997476.

The previous prime is 16422997457. The next prime is 16422997561. The reversal of 16422997477 is 77479922461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14658913476 + 1764084001 = 121074^2 + 42001^2 .

It is an emirp because it is prime and its reverse (77479922461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16422997477 is a prime.

It is a super-2 number, since 2×16422997477² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16422997417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211498738 + 8211498739.

It is an arithmetic number, because the mean of its divisors is an integer number (8211498739).

Almost surely, 2^16422997477 is an apocalyptic number.

It is an amenable number.

16422997477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16422997477 is an equidigital number, since it uses as much as digits as its factorization.

16422997477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 58.

The spelling of 16422997477 in words is "sixteen billion, four hundred twenty-two million, nine hundred ninety-seven thousand, four hundred seventy-seven".