133530640340 has 24 divisors (see below), whose sum is σ = 281120694792. Its totient is φ = 53277713280.

The previous prime is 133530640339. The next prime is 133530640361. The reversal of 133530640340 is 43046035331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11570444356 + 121960195984 = 107566^2 + 349228^2 .

It is a super-2 number, since 2×133530640340² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133530640297 and 133530640306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8400791 + ... + 8416670.

It is an arithmetic number, because the mean of its divisors is an integer number (11713362283).

Almost surely, 2^133530640340 is an apocalyptic number.

133530640340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133530640340 is an abundant number, since it is smaller than the sum of its proper divisors (147590054452).

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

133530640340 is a wasteful number, since it uses less digits than its factorization.

133530640340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16817867 (or 16817865 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 133530640340 its reverse (43046035331), we get a palindrome (176576675671).

The spelling of 133530640340 in words is "one hundred thirty-three billion, five hundred thirty million, six hundred forty thousand, three hundred forty".