133326591696 has 120 divisors (see below), whose sum is σ = 395364907080. Its totient is φ = 41797582848.

The previous prime is 133326591647. The next prime is 133326591701. The reversal of 133326591696 is 696195623331.

133326591696 is a `hidden beast` number, since 13 + 3 + 32 + 6 + 591 + 6 + 9 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12873171600 + 120453420096 = 113460^2 + 347064^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3479136 + ... + 3517248.

It is an arithmetic number, because the mean of its divisors is an integer number (3294707559).

Almost surely, 2^133326591696 is an apocalyptic number.

133326591696 is a gapful number since it is divisible by the number (16) 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 133326591696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197682453540).

133326591696 is an abundant number, since it is smaller than the sum of its proper divisors (262038315384).

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

133326591696 is a wasteful number, since it uses less digits than its factorization.

133326591696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39573 (or 39564 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 54.

The spelling of 133326591696 in words is "one hundred thirty-three billion, three hundred twenty-six million, five hundred ninety-one thousand, six hundred ninety-six".