220709168951 has 2 divisors, whose sum is σ = 220709168952. Its totient is φ = 220709168950.

The previous prime is 220709168923. The next prime is 220709168957. The reversal of 220709168951 is 159861907022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220709168951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220709168951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220709168957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110354584475 + 110354584476.

It is an arithmetic number, because the mean of its divisors is an integer number (110354584476).

Almost surely, 2^220709168951 is an apocalyptic number.

220709168951 is a deficient number, since it is larger than the sum of its proper divisors (1).

220709168951 is an equidigital number, since it uses as much as digits as its factorization.

220709168951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 220709168951 in words is "two hundred twenty billion, seven hundred nine million, one hundred sixty-eight thousand, nine hundred fifty-one".