20466517211 has 8 divisors (see below), whose sum is σ = 23887971840. Its totient is φ = 17169479208.

The previous prime is 20466517129. The next prime is 20466517219. The reversal of 20466517211 is 11271566402.

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

It is a de Polignac number, because none of the positive numbers 2^k-20466517211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20466517219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31103801 + ... + 31104458.

It is an arithmetic number, because the mean of its divisors is an integer number (2985996480).

Almost surely, 2^20466517211 is an apocalyptic number.

20466517211 is a deficient number, since it is larger than the sum of its proper divisors (3421454629).

20466517211 is an equidigital number, since it uses as much as digits as its factorization.

20466517211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62208313.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 20466517211 in words is "twenty billion, four hundred sixty-six million, five hundred seventeen thousand, two hundred eleven".