133291856352 has 96 divisors (see below), whose sum is σ = 357112627200. Its totient is φ = 43522472448.

The previous prime is 133291856329. The next prime is 133291856377. The reversal of 133291856352 is 253658192331.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893974 + ... + 1032362.

It is an arithmetic number, because the mean of its divisors is an integer number (3719923200).

Almost surely, 2^133291856352 is an apocalyptic number.

133291856352 is a gapful number since it is divisible by the number (12) 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 133291856352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178556313600).

133291856352 is an abundant number, since it is smaller than the sum of its proper divisors (223820770848).

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

133291856352 is a wasteful number, since it uses less digits than its factorization.

133291856352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138608 (or 138600 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

It can be divided in two parts, 13329 and 1856352, that added together give a palindrome (1869681).

The spelling of 133291856352 in words is "one hundred thirty-three billion, two hundred ninety-one million, eight hundred fifty-six thousand, three hundred fifty-two".