133321099956 has 192 divisors, whose sum is σ = 355784970240. Its totient is φ = 38502397440.

The previous prime is 133321099907. The next prime is 133321099957. The reversal of 133321099956 is 659990123331.

It is a junction number, because it is equal to n+sod(n) for n = 133321099899 and 133321099908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133321099957) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45703410 + ... + 45706326.

It is an arithmetic number, because the mean of its divisors is an integer number (1853046720).

Almost surely, 2^133321099956 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 133321099956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177892485120).

133321099956 is an abundant number, since it is smaller than the sum of its proper divisors (222463870284).

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

133321099956 is a wasteful number, since it uses less digits than its factorization.

133321099956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 51.

The spelling of 133321099956 in words is "one hundred thirty-three billion, three hundred twenty-one million, ninety-nine thousand, nine hundred fifty-six".