268821481628 has 24 divisors (see below), whose sum is σ = 542966166624. Its totient is φ = 114068520000.

The previous prime is 268821481543. The next prime is 268821481667. The reversal of 268821481628 is 826184128862.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 47525723 + ... + 47531378.

It is an arithmetic number, because the mean of its divisors is an integer number (22623590276).

Almost surely, 2^268821481628 is an apocalyptic number.

268821481628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

268821481628 is an abundant number, since it is smaller than the sum of its proper divisors (274144684996).

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

268821481628 is a wasteful number, since it uses less digits than its factorization.

268821481628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95057213 (or 95057211 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 56.

The spelling of 268821481628 in words is "two hundred sixty-eight billion, eight hundred twenty-one million, four hundred eighty-one thousand, six hundred twenty-eight".