220019859977 has 2 divisors, whose sum is σ = 220019859978. Its totient is φ = 220019859976.

The previous prime is 220019859949. The next prime is 220019860007. The reversal of 220019859977 is 779958910022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159767284681 + 60252575296 = 399709^2 + 245464^2 .

It is a cyclic number.

It is not a de Polignac number, because 220019859977 - 2¹⁰ = 220019858953 is a prime.

It is not a weakly prime, because it can be changed into another prime (220019859907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110009929988 + 110009929989.

It is an arithmetic number, because the mean of its divisors is an integer number (110009929989).

Almost surely, 2^220019859977 is an apocalyptic number.

It is an amenable number.

220019859977 is a deficient number, since it is larger than the sum of its proper divisors (1).

220019859977 is an equidigital number, since it uses as much as digits as its factorization.

220019859977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 59.

The spelling of 220019859977 in words is "two hundred twenty billion, nineteen million, eight hundred fifty-nine thousand, nine hundred seventy-seven".