133488066820 has 24 divisors (see below), whose sum is σ = 280370291544. Its totient is φ = 53386588416.

The previous prime is 133488066799. The next prime is 133488066953. The reversal of 133488066820 is 28660884331.

It can be written as a sum of positive squares in 4 ways, for example, as 48915284224 + 84572782596 = 221168^2 + 290814^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412447 + ... + 661126.

It is an arithmetic number, because the mean of its divisors is an integer number (11682095481).

Almost surely, 2^133488066820 is an apocalyptic number.

133488066820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133488066820 is an abundant number, since it is smaller than the sum of its proper divisors (146882224724).

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

133488066820 is a wasteful number, since it uses less digits than its factorization.

133488066820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079799 (or 1079797 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 133488066820 in words is "one hundred thirty-three billion, four hundred eighty-eight million, sixty-six thousand, eight hundred twenty".