718661422729 has 8 divisors (see below), whose sum is σ = 766744295328. Its totient is φ = 671223958080.

The previous prime is 718661422727. The next prime is 718661422741. The reversal of 718661422729 is 927224166817.

718661422729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 718661422729 - 2¹ = 718661422727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 718661422729.

It is not an unprimeable number, because it can be changed into a prime (718661422723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161349687 + ... + 161354140.

It is an arithmetic number, because the mean of its divisors is an integer number (95843036916).

Almost surely, 2^718661422729 is an apocalyptic number.

It is an amenable number.

718661422729 is a deficient number, since it is larger than the sum of its proper divisors (48082872599).

718661422729 is a wasteful number, since it uses less digits than its factorization.

718661422729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322703975.

The product of its digits is 4064256, while the sum is 55.

The spelling of 718661422729 in words is "seven hundred eighteen billion, six hundred sixty-one million, four hundred twenty-two thousand, seven hundred twenty-nine".