268620932880 has 160 divisors (see below), whose sum is σ = 929090891520. Its totient is φ = 71334881280.

The previous prime is 268620932869. The next prime is 268620932981. The reversal of 268620932880 is 88239026862.

268620932880 is a `hidden beast` number, since 2 + 6 + 8 + 620 + 9 + 3 + 2 + 8 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262549 + ... + 778571.

It is an arithmetic number, because the mean of its divisors is an integer number (5806818072).

Almost surely, 2^268620932880 is an apocalyptic number.

268620932880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268620932880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464545445760).

268620932880 is an abundant number, since it is smaller than the sum of its proper divisors (660469958640).

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

268620932880 is a wasteful number, since it uses less digits than its factorization.

268620932880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516286 (or 516274 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 268620932880 in words is "two hundred sixty-eight billion, six hundred twenty million, nine hundred thirty-two thousand, eight hundred eighty".