718340673437 has 4 divisors (see below), whose sum is σ = 719999659260. Its totient is φ = 716681687616.

The previous prime is 718340673433. The next prime is 718340673503. The reversal of 718340673437 is 734376043817.

718340673437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 349826114521 + 368514558916 = 591461^2 + 607054^2 .

It is a cyclic number.

It is not a de Polignac number, because 718340673437 - 2² = 718340673433 is a prime.

It is a super-2 number, since 2×718340673437² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718340673433) 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, 829492262 + ... + 829493127.

It is an arithmetic number, because the mean of its divisors is an integer number (179999914815).

Almost surely, 2^718340673437 is an apocalyptic number.

It is an amenable number.

718340673437 is a deficient number, since it is larger than the sum of its proper divisors (1658985823).

718340673437 is a wasteful number, since it uses less digits than its factorization.

718340673437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658985822.

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 718340673437 in words is "seven hundred eighteen billion, three hundred forty million, six hundred seventy-three thousand, four hundred thirty-seven".