718408223773 has 2 divisors, whose sum is σ = 718408223774. Its totient is φ = 718408223772.

The previous prime is 718408223711. The next prime is 718408223783. The reversal of 718408223773 is 377322804817.

718408223773 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., 535667363449 + 182740860324 = 731893^2 + 427482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718408223773 is a prime.

It is a super-3 number, since 3×718408223773³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 718408223773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718408223783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359204111886 + 359204111887.

It is an arithmetic number, because the mean of its divisors is an integer number (359204111887).

Almost surely, 2^718408223773 is an apocalyptic number.

It is an amenable number.

718408223773 is a deficient number, since it is larger than the sum of its proper divisors (1).

718408223773 is an equidigital number, since it uses as much as digits as its factorization.

718408223773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 718408223773 in words is "seven hundred eighteen billion, four hundred eight million, two hundred twenty-three thousand, seven hundred seventy-three".