667072772473 has 2 divisors, whose sum is σ = 667072772474. Its totient is φ = 667072772472.

The previous prime is 667072772411. The next prime is 667072772497. The reversal of 667072772473 is 374277270766.

667072772473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564824396304 + 102248376169 = 751548^2 + 319763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667072772473 is a prime.

It is not a weakly prime, because it can be changed into another prime (667072772273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333536386236 + 333536386237.

It is an arithmetic number, because the mean of its divisors is an integer number (333536386237).

Almost surely, 2^667072772473 is an apocalyptic number.

It is an amenable number.

667072772473 is a deficient number, since it is larger than the sum of its proper divisors (1).

667072772473 is an equidigital number, since it uses as much as digits as its factorization.

667072772473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29042496, while the sum is 58.

The spelling of 667072772473 in words is "six hundred sixty-seven billion, seventy-two million, seven hundred seventy-two thousand, four hundred seventy-three".