16422020077 has 8 divisors (see below), whose sum is σ = 17390072952. Its totient is φ = 15454195200.

The previous prime is 16422020063. The next prime is 16422020081. The reversal of 16422020077 is 77002022461.

It can be written as a sum of positive squares in 4 ways, for example, as 5079983076 + 11342037001 = 71274^2 + 106499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16422020077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16422020177) 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 in 7 ways as a sum of consecutive naturals, for example, 104377 + ... + 209137.

It is an arithmetic number, because the mean of its divisors is an integer number (2173759119).

Almost surely, 2^16422020077 is an apocalyptic number.

16422020077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16422020077 is a deficient number, since it is larger than the sum of its proper divisors (968052875).

16422020077 is a wasteful number, since it uses less digits than its factorization.

16422020077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113999.

The product of its (nonzero) digits is 9408, while the sum is 31.

The spelling of 16422020077 in words is "sixteen billion, four hundred twenty-two million, twenty thousand, seventy-seven".