133733665540 has 24 divisors (see below), whose sum is σ = 280853518680. Its totient is φ = 53491024128.

The previous prime is 133733665493. The next prime is 133733665579. The reversal of 133733665540 is 45566337331.

It can be written as a sum of positive squares in 4 ways, for example, as 48255787584 + 85477877956 = 219672^2 + 292366^2 .

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, 334306 + ... + 615814.

It is an arithmetic number, because the mean of its divisors is an integer number (11702229945).

Almost surely, 2^133733665540 is an apocalyptic number.

133733665540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133733665540 is an abundant number, since it is smaller than the sum of its proper divisors (147119853140).

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

133733665540 is a wasteful number, since it uses less digits than its factorization.

133733665540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305271 (or 305269 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 46.

The spelling of 133733665540 in words is "one hundred thirty-three billion, seven hundred thirty-three million, six hundred sixty-five thousand, five hundred forty".