133540423020 has 72 divisors (see below), whose sum is σ = 405513894240. Its totient is φ = 35571985920.

The previous prime is 133540423007. The next prime is 133540423033. The reversal of 133540423020 is 20324045331.

133540423020 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 404 + 230 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (133540423007) and next prime (133540423033).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238221 + ... + 569060.

It is an arithmetic number, because the mean of its divisors is an integer number (5632137420).

Almost surely, 2^133540423020 is an apocalyptic number.

133540423020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133540423020 is an abundant number, since it is smaller than the sum of its proper divisors (271973471220).

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

133540423020 is a wasteful number, since it uses less digits than its factorization.

133540423020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808215 (or 808210 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 133540423020 its reverse (20324045331), we get a palindrome (153864468351).

The spelling of 133540423020 in words is "one hundred thirty-three billion, five hundred forty million, four hundred twenty-three thousand, twenty".