497638240128 has 48 divisors (see below), whose sum is σ = 1432005876600. Its totient is φ = 165879412992.

The previous prime is 497638240117. The next prime is 497638240133. The reversal of 497638240128 is 821042836794.

497638240128 is a `hidden beast` number, since 497 + 6 + 3 + 8 + 24 + 0 + 128 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215987668 + ... + 215989971.

Almost surely, 2^497638240128 is an apocalyptic number.

497638240128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

497638240128 is an abundant number, since it is smaller than the sum of its proper divisors (934367636472).

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

497638240128 is a wasteful number, since it uses less digits than its factorization.

497638240128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431977659 (or 431977644 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 497638240128 in words is "four hundred ninety-seven billion, six hundred thirty-eight million, two hundred forty thousand, one hundred twenty-eight".