718942872769 has 4 divisors (see below), whose sum is σ = 784301315760. Its totient is φ = 653584429780.

The previous prime is 718942872731. The next prime is 718942872787. The reversal of 718942872769 is 967278249817.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 718942872769 - 2²¹ = 718940775617 is a prime.

It is a super-2 number, since 2×718942872769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 718942872698 and 718942872707.

It is not an unprimeable number, because it can be changed into a prime (718942872269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32679221479 + ... + 32679221500.

It is an arithmetic number, because the mean of its divisors is an integer number (196075328940).

Almost surely, 2^718942872769 is an apocalyptic number.

It is an amenable number.

718942872769 is a deficient number, since it is larger than the sum of its proper divisors (65358442991).

718942872769 is a wasteful number, since it uses less digits than its factorization.

718942872769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65358442990.

The product of its digits is 170698752, while the sum is 70.

The spelling of 718942872769 in words is "seven hundred eighteen billion, nine hundred forty-two million, eight hundred seventy-two thousand, seven hundred sixty-nine".