718430820643 has 8 divisors (see below), whose sum is σ = 730224839168. Its totient is φ = 706689572544.

The previous prime is 718430820631. The next prime is 718430820647. The reversal of 718430820643 is 346028034817.

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

It is a cyclic number.

It is not a de Polignac number, because 718430820643 - 2⁹ = 718430820131 is a prime.

It is a super-2 number, since 2×718430820643² (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 = 718430820593 and 718430820602.

It is not an unprimeable number, because it can be changed into a prime (718430820647) 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, 13165155 + ... + 13219612.

It is an arithmetic number, because the mean of its divisors is an integer number (91278104896).

Almost surely, 2^718430820643 is an apocalyptic number.

718430820643 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

718430820643 is a deficient number, since it is larger than the sum of its proper divisors (11794018525).

718430820643 is a wasteful number, since it uses less digits than its factorization.

718430820643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26385213.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 718430820643 in words is "seven hundred eighteen billion, four hundred thirty million, eight hundred twenty thousand, six hundred forty-three".