718607756149 has 2 divisors, whose sum is σ = 718607756150. Its totient is φ = 718607756148.

The previous prime is 718607756137. The next prime is 718607756227. The reversal of 718607756149 is 941657706817.

718607756149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602501964100 + 116105792049 = 776210^2 + 340743^2 .

It is a cyclic number.

It is not a de Polignac number, because 718607756149 - 2⁵ = 718607756117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718607756249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359303878074 + 359303878075.

It is an arithmetic number, because the mean of its divisors is an integer number (359303878075).

Almost surely, 2^718607756149 is an apocalyptic number.

It is an amenable number.

718607756149 is a deficient number, since it is larger than the sum of its proper divisors (1).

718607756149 is an equidigital number, since it uses as much as digits as its factorization.

718607756149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 718607756149 in words is "seven hundred eighteen billion, six hundred seven million, seven hundred fifty-six thousand, one hundred forty-nine".