20730606511 has 2 divisors, whose sum is σ = 20730606512. Its totient is φ = 20730606510.

The previous prime is 20730606499. The next prime is 20730606553. The reversal of 20730606511 is 11560603702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20730606511 - 2¹¹ = 20730604463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20730606571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10365303255 + 10365303256.

It is an arithmetic number, because the mean of its divisors is an integer number (10365303256).

Almost surely, 2^20730606511 is an apocalyptic number.

20730606511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20730606511 is an equidigital number, since it uses as much as digits as its factorization.

20730606511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 20730606511 in words is "twenty billion, seven hundred thirty million, six hundred six thousand, five hundred eleven".