20767002011 has 4 divisors (see below), whose sum is σ = 23733716592. Its totient is φ = 17800287432.

The previous prime is 20767002007. The next prime is 20767002043. The reversal of 20767002011 is 11020076702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20767002011 - 2² = 20767002007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20767002811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483357280 + ... + 1483357293.

It is an arithmetic number, because the mean of its divisors is an integer number (5933429148).

Almost surely, 2^20767002011 is an apocalyptic number.

20767002011 is a deficient number, since it is larger than the sum of its proper divisors (2966714581).

20767002011 is an equidigital number, since it uses as much as digits as its factorization.

20767002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966714580.

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 20767002011 its reverse (11020076702), we get a palindrome (31787078713).

The spelling of 20767002011 in words is "twenty billion, seven hundred sixty-seven million, two thousand, eleven".