497731889655 has 384 divisors, whose sum is σ = 1236648591360. Its totient is φ = 178319232000.

The previous prime is 497731889653. The next prime is 497731889723. The reversal of 497731889655 is 556988137794.

497731889655 is a `hidden beast` number, since 497 + 7 + 3 + 1 + 8 + 89 + 6 + 55 = 666.

It is not a de Polignac number, because 497731889655 - 2¹ = 497731889653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497731889653) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 60761610 + ... + 60769800.

It is an arithmetic number, because the mean of its divisors is an integer number (3220439040).

Almost surely, 2^497731889655 is an apocalyptic number.

497731889655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

497731889655 is an abundant number, since it is smaller than the sum of its proper divisors (738916701705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

497731889655 is a wasteful number, since it uses less digits than its factorization.

497731889655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8320 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 497731889655 in words is "four hundred ninety-seven billion, seven hundred thirty-one million, eight hundred eighty-nine thousand, six hundred fifty-five".