539668624468 has 24 divisors (see below), whose sum is σ = 1000073718504. Its totient is φ = 253936435200.

The previous prime is 539668624441. The next prime is 539668624489. The reversal of 539668624468 is 864426866935.

It can be written as a sum of positive squares in 4 ways, for example, as 68726816964 + 470941807504 = 262158^2 + 686252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302548 + ... + 1082068.

It is an arithmetic number, because the mean of its divisors is an integer number (41669738271).

Almost surely, 2^539668624468 is an apocalyptic number.

It is an amenable number.

539668624468 is a deficient number, since it is larger than the sum of its proper divisors (460405094036).

539668624468 is a wasteful number, since it uses less digits than its factorization.

539668624468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789723 (or 789721 counting only the distinct ones).

The product of its digits is 358318080, while the sum is 67.

The spelling of 539668624468 in words is "five hundred thirty-nine billion, six hundred sixty-eight million, six hundred twenty-four thousand, four hundred sixty-eight".