20229769691570 has 16 divisors (see below), whose sum is σ = 36413737313688. Its totient is φ = 8091874128000.

The previous prime is 20229769691569. The next prime is 20229769691611. The reversal of 20229769691570 is 7519696792202.

It can be written as a sum of positive squares in 4 ways, for example, as 11066247600409 + 9163522091161 = 3326597^2 + 3027131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20229769691497 and 20229769691506.

It is an unprimeable number.

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, 1625069 + ... + 6565088.

Almost surely, 2^{20229769691570} is an apocalyptic number.

20229769691570 is a deficient number, since it is larger than the sum of its proper divisors (16183967622118).

20229769691570 is a wasteful number, since it uses less digits than its factorization.

20229769691570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8437165.

The product of its (nonzero) digits is 51438240, while the sum is 65.

The spelling of 20229769691570 in words is "twenty trillion, two hundred twenty-nine billion, seven hundred sixty-nine million, six hundred ninety-one thousand, five hundred seventy".