20196104769 has 27 divisors (see below), whose sum is σ = 29482703523. Its totient is φ = 13322241072.

The previous prime is 20196104749. The next prime is 20196104833. The reversal of 20196104769 is 96740169102.

The square root of 20196104769 is 142113.

It is a perfect power (a square), and thus also a powerful number.

20196104769 is a `hidden beast` number, since 20 + 1 + 9 + 610 + 4 + 7 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10977800625 + 9218304144 = 104775^2 + 96012^2 .

It is not a de Polignac number, because 20196104769 - 2¹⁹ = 20195580481 is a prime.

It is a super-2 number, since 2×20196104769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20196104749) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 54144867 + ... + 54145239.

Almost surely, 2^20196104769 is an apocalyptic number.

20196104769 is the 142113-rd square number.

20196104769 is the 71057-th centered octagonal number.

It is an amenable number.

20196104769 is a deficient number, since it is larger than the sum of its proper divisors (9286598754).

20196104769 is an frugal number, since it uses more digits than its factorization.

20196104769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 20196104769 in words is "twenty billion, one hundred ninety-six million, one hundred four thousand, seven hundred sixty-nine".