133433551464 has 64 divisors (see below), whose sum is σ = 341518679040. Its totient is φ = 43420950720.

The previous prime is 133433551423. The next prime is 133433551469. The reversal of 133433551464 is 464155334331.

It is not an unprimeable number, because it can be changed into a prime (133433551469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2018049 + ... + 2083119.

It is an arithmetic number, because the mean of its divisors is an integer number (5336229360).

Almost surely, 2^133433551464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133433551464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170759339520).

133433551464 is an abundant number, since it is smaller than the sum of its proper divisors (208085127576).

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

133433551464 is a wasteful number, since it uses less digits than its factorization.

133433551464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67110 (or 67106 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

Adding to 133433551464 its reverse (464155334331), we get a palindrome (597588885795).

The spelling of 133433551464 in words is "one hundred thirty-three billion, four hundred thirty-three million, five hundred fifty-one thousand, four hundred sixty-four".