268888049783280 has 100 divisors (see below), whose sum is σ = 933888032186472. Its totient is φ = 71703479940480.

The previous prime is 268888049783279. The next prime is 268888049783281. The reversal of 268888049783280 is 82387940888862.

268888049783280 is a `hidden beast` number, since 26 + 8 + 8 + 8 + 8 + 0 + 497 + 83 + 28 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (268888049783279) and next prime (268888049783281).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 268888049783280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268888049783281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20747528226 + ... + 20747541185.

Almost surely, 2^{268888049783280} is an apocalyptic number.

268888049783280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268888049783280 is an abundant number, since it is smaller than the sum of its proper divisors (664999982403192).

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

268888049783280 is a wasteful number, since it uses less digits than its factorization.

268888049783280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41495069436 (or 41495069421 counting only the distinct ones).

The product of its (nonzero) digits is 4756340736, while the sum is 81.

The spelling of 268888049783280 in words is "two hundred sixty-eight trillion, eight hundred eighty-eight billion, forty-nine million, seven hundred eighty-three thousand, two hundred eighty".