20002660511 has 2 divisors, whose sum is σ = 20002660512. Its totient is φ = 20002660510.

The previous prime is 20002660501. The next prime is 20002660603. The reversal of 20002660511 is 11506620002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002660511 - 2¹⁴ = 20002644127 is a prime.

It is a super-2 number, since 2×20002660511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002660501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001330255 + 10001330256.

It is an arithmetic number, because the mean of its divisors is an integer number (10001330256).

Almost surely, 2^20002660511 is an apocalyptic number.

20002660511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002660511 is an equidigital number, since it uses as much as digits as its factorization.

20002660511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 20002660511 in words is "twenty billion, two million, six hundred sixty thousand, five hundred eleven".