718257944953 has 2 divisors, whose sum is σ = 718257944954. Its totient is φ = 718257944952.

The previous prime is 718257944903. The next prime is 718257945007. The reversal of 718257944953 is 359449752817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718091844409 + 166100544 = 847403^2 + 12888^2 .

It is a cyclic number.

It is not a de Polignac number, because 718257944953 - 2²¹ = 718255847801 is a prime.

It is not a weakly prime, because it can be changed into another prime (718257944903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359128972476 + 359128972477.

It is an arithmetic number, because the mean of its divisors is an integer number (359128972477).

Almost surely, 2^718257944953 is an apocalyptic number.

It is an amenable number.

718257944953 is a deficient number, since it is larger than the sum of its proper divisors (1).

718257944953 is an equidigital number, since it uses as much as digits as its factorization.

718257944953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76204800, while the sum is 64.

The spelling of 718257944953 in words is "seven hundred eighteen billion, two hundred fifty-seven million, nine hundred forty-four thousand, nine hundred fifty-three".