20201069546 has 16 divisors (see below), whose sum is σ = 34842865344. Its totient is φ = 8604486144.

The previous prime is 20201069527. The next prime is 20201069549. The reversal of 20201069546 is 64596010202.

It is a happy number.

It is a super-2 number, since 2×20201069546² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20201069549) 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, 4423895 + ... + 4428458.

It is an arithmetic number, because the mean of its divisors is an integer number (2177679084).

Almost surely, 2^20201069546 is an apocalyptic number.

20201069546 is a deficient number, since it is larger than the sum of its proper divisors (14641795798).

20201069546 is a wasteful number, since it uses less digits than its factorization.

20201069546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8852525.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 20201069546 its reverse (64596010202), we get a palindrome (84797079748).

The spelling of 20201069546 in words is "twenty billion, two hundred one million, sixty-nine thousand, five hundred forty-six".