20575946291 has 2 divisors, whose sum is σ = 20575946292. Its totient is φ = 20575946290.

The previous prime is 20575946213. The next prime is 20575946323. The reversal of 20575946291 is 19264957502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20575946291 - 2¹⁰ = 20575945267 is a prime.

It is not a weakly prime, because it can be changed into another prime (20575946201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10287973145 + 10287973146.

It is an arithmetic number, because the mean of its divisors is an integer number (10287973146).

Almost surely, 2^20575946291 is an apocalyptic number.

20575946291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20575946291 is an equidigital number, since it uses as much as digits as its factorization.

20575946291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 20575946291 in words is "twenty billion, five hundred seventy-five million, nine hundred forty-six thousand, two hundred ninety-one".