133736136432 has 80 divisors (see below), whose sum is σ = 349211294880. Its totient is φ = 44098338816.

The previous prime is 133736136407. The next prime is 133736136449. The reversal of 133736136432 is 234631637331.

It is a happy number.

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, 12253794 + ... + 12264702.

It is an arithmetic number, because the mean of its divisors is an integer number (4365141186).

Almost surely, 2^133736136432 is an apocalyptic number.

133736136432 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 133736136432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174605647440).

133736136432 is an abundant number, since it is smaller than the sum of its proper divisors (215475158448).

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

133736136432 is a wasteful number, since it uses less digits than its factorization.

133736136432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650 (or 13644 counting only the distinct ones).

The product of its digits is 489888, while the sum is 42.

The spelling of 133736136432 in words is "one hundred thirty-three billion, seven hundred thirty-six million, one hundred thirty-six thousand, four hundred thirty-two".