20680582611 has 32 divisors (see below), whose sum is σ = 30082606848. Its totient is φ = 12561356160.

The previous prime is 20680582607. The next prime is 20680582619. The reversal of 20680582611 is 11628508602.

It is not a de Polignac number, because 20680582611 - 2² = 20680582607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 20680582611.

It is not an unprimeable number, because it can be changed into a prime (20680582619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1146976 + ... + 1164866.

It is an arithmetic number, because the mean of its divisors is an integer number (940081464).

Almost surely, 2^20680582611 is an apocalyptic number.

20680582611 is a deficient number, since it is larger than the sum of its proper divisors (9402024237).

20680582611 is a wasteful number, since it uses less digits than its factorization.

20680582611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18291.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 20680582611 in words is "twenty billion, six hundred eighty million, five hundred eighty-two thousand, six hundred eleven".