718492921487 has 16 divisors (see below), whose sum is σ = 805088325888. Its totient is φ = 635559348480.

The previous prime is 718492921481. The next prime is 718492921561. The reversal of 718492921487 is 784129294817.

It is a cyclic number.

It is not a de Polignac number, because 718492921487 - 2²⁰ = 718491872911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718492921481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2763458 + ... + 3012255.

It is an arithmetic number, because the mean of its divisors is an integer number (50318020368).

Almost surely, 2^718492921487 is an apocalyptic number.

718492921487 is a deficient number, since it is larger than the sum of its proper divisors (86595404401).

718492921487 is a wasteful number, since it uses less digits than its factorization.

718492921487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776030.

The product of its digits is 16257024, while the sum is 62.

The spelling of 718492921487 in words is "seven hundred eighteen billion, four hundred ninety-two million, nine hundred twenty-one thousand, four hundred eighty-seven".