20553411066 has 8 divisors (see below), whose sum is σ = 41106822144. Its totient is φ = 6851137020.

The previous prime is 20553411059. The next prime is 20553411107. The reversal of 20553411066 is 66011435502.

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

20553411066 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712784250 + ... + 1712784261.

It is an arithmetic number, because the mean of its divisors is an integer number (5138352768).

Almost surely, 2^20553411066 is an apocalyptic number.

20553411066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20553411066 is a wasteful number, since it uses less digits than its factorization.

20553411066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425568516.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 20553411066 its reverse (66011435502), we get a palindrome (86564846568).

The spelling of 20553411066 in words is "twenty billion, five hundred fifty-three million, four hundred eleven thousand, sixty-six".