133136123500 has 96 divisors (see below), whose sum is σ = 295068795840. Its totient is φ = 52471232000.

The previous prime is 133136123473. The next prime is 133136123501. The reversal of 133136123500 is 5321631331.

It is not an unprimeable number, because it can be changed into a prime (133136123501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13033395 + ... + 13043605.

It is an arithmetic number, because the mean of its divisors is an integer number (3073633290).

Almost surely, 2^133136123500 is an apocalyptic number.

133136123500 is a gapful number since it is divisible by the number (10) 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 133136123500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147534397920).

133136123500 is an abundant number, since it is smaller than the sum of its proper divisors (161932672340).

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

133136123500 is a wasteful number, since it uses less digits than its factorization.

133136123500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612 (or 10600 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 133136123500 its reverse (5321631331), we get a palindrome (138457754831).

The spelling of 133136123500 in words is "one hundred thirty-three billion, one hundred thirty-six million, one hundred twenty-three thousand, five hundred".