133198733388 has 192 divisors, whose sum is σ = 395019878400. Its totient is φ = 34069351680.

The previous prime is 133198733383. The next prime is 133198733401. The reversal of 133198733388 is 883337891331.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (133198733383) 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, 2144733 + ... + 2205963.

It is an arithmetic number, because the mean of its divisors is an integer number (2057395200).

Almost surely, 2^133198733388 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 133198733388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197509939200).

133198733388 is an abundant number, since it is smaller than the sum of its proper divisors (261821145012).

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

133198733388 is a wasteful number, since it uses less digits than its factorization.

133198733388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61340 (or 61338 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

It can be divided in two parts, 133198 and 733388, that added together give a triangular number (866586 = T₁₃₁₆).

The spelling of 133198733388 in words is "one hundred thirty-three billion, one hundred ninety-eight million, seven hundred thirty-three thousand, three hundred eighty-eight".