650473672781617 has 2 divisors, whose sum is σ = 650473672781618. Its totient is φ = 650473672781616.

The previous prime is 650473672781509. The next prime is 650473672781657. The reversal of 650473672781617 is 716187276374056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 645334560606096 + 5139112175521 = 25403436^2 + 2266961^2 .

It is a cyclic number.

It is not a de Polignac number, because 650473672781617 - 2²³ = 650473664393009 is a prime.

It is a super-2 number, since 2×650473672781617² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (650473672781657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325236836390808 + 325236836390809.

It is an arithmetic number, because the mean of its divisors is an integer number (325236836390809).

Almost surely, 2^{650473672781617} is an apocalyptic number.

It is an amenable number.

650473672781617 is a deficient number, since it is larger than the sum of its proper divisors (1).

650473672781617 is an equidigital number, since it uses as much as digits as its factorization.

650473672781617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497871360, while the sum is 70.

The spelling of 650473672781617 in words is "six hundred fifty trillion, four hundred seventy-three billion, six hundred seventy-two million, seven hundred eighty-one thousand, six hundred seventeen".