133209254640 has 320 divisors, whose sum is σ = 516684644352. Its totient is φ = 27580953600.

The previous prime is 133209254627. The next prime is 133209254671. The reversal of 133209254640 is 46452902331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5217105 + ... + 5242575.

Almost surely, 2^133209254640 is an apocalyptic number.

133209254640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133209254640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258342322176).

133209254640 is an abundant number, since it is smaller than the sum of its proper divisors (383475389712).

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

133209254640 is a wasteful number, since it uses less digits than its factorization.

133209254640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25788 (or 25782 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 133209254640 in words is "one hundred thirty-three billion, two hundred nine million, two hundred fifty-four thousand, six hundred forty".