718430077693 has 2 divisors, whose sum is σ = 718430077694. Its totient is φ = 718430077692.

The previous prime is 718430077657. The next prime is 718430077711. The reversal of 718430077693 is 396770034817.

718430077693 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., 563223232324 + 155206845369 = 750482^2 + 393963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718430077693 is a prime.

It is a super-2 number, since 2×718430077693² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718430077633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359215038846 + 359215038847.

It is an arithmetic number, because the mean of its divisors is an integer number (359215038847).

Almost surely, 2^718430077693 is an apocalyptic number.

It is an amenable number.

718430077693 is a deficient number, since it is larger than the sum of its proper divisors (1).

718430077693 is an equidigital number, since it uses as much as digits as its factorization.

718430077693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 718430077693 in words is "seven hundred eighteen billion, four hundred thirty million, seventy-seven thousand, six hundred ninety-three".