16177220105 has 16 divisors (see below), whose sum is σ = 20142892560. Its totient is φ = 12462170112.

The previous prime is 16177220093. The next prime is 16177220117. The reversal of 16177220105 is 50102277161.

It is an interprime number because it is at equal distance from previous prime (16177220093) and next prime (16177220117).

It can be written as a sum of positive squares in 8 ways, for example, as 2771285449 + 13405934656 = 52643^2 + 115784^2 .

It is a cyclic number.

It is not a de Polignac number, because 16177220105 - 2²² = 16173025801 is a prime.

It is a super-2 number, since 2×16177220105² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432800 + ... + 468689.

It is an arithmetic number, because the mean of its divisors is an integer number (1258930785).

Almost surely, 2^16177220105 is an apocalyptic number.

It is an amenable number.

16177220105 is a deficient number, since it is larger than the sum of its proper divisors (3965672455).

16177220105 is an equidigital number, since it uses as much as digits as its factorization.

16177220105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901628.

The product of its (nonzero) digits is 5880, while the sum is 32.

Adding to 16177220105 its reverse (50102277161), we get a palindrome (66279497266).

The spelling of 16177220105 in words is "sixteen billion, one hundred seventy-seven million, two hundred twenty thousand, one hundred five".