20686248211 has 8 divisors (see below), whose sum is σ = 20737911600. Its totient is φ = 20634631680.

The previous prime is 20686248151. The next prime is 20686248217. The reversal of 20686248211 is 11284268602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20686248211 - 2²³ = 20677859603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20686248217) 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, 973660 + ... + 994678.

It is an arithmetic number, because the mean of its divisors is an integer number (2592238950).

Almost surely, 2^20686248211 is an apocalyptic number.

20686248211 is a deficient number, since it is larger than the sum of its proper divisors (51663389).

20686248211 is a wasteful number, since it uses less digits than its factorization.

20686248211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23429.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 20686248211 in words is "twenty billion, six hundred eighty-six million, two hundred forty-eight thousand, two hundred eleven".