20206191751 has 2 divisors, whose sum is σ = 20206191752. Its totient is φ = 20206191750.

The previous prime is 20206191683. The next prime is 20206191779. The reversal of 20206191751 is 15719160202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20206191751 - 2²⁵ = 20172637319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20206141751) 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, 10103095875 + 10103095876.

It is an arithmetic number, because the mean of its divisors is an integer number (10103095876).

Almost surely, 2^20206191751 is an apocalyptic number.

20206191751 is a deficient number, since it is larger than the sum of its proper divisors (1).

20206191751 is an equidigital number, since it uses as much as digits as its factorization.

20206191751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 20206191751 in words is "twenty billion, two hundred six million, one hundred ninety-one thousand, seven hundred fifty-one".