133137886860 has 144 divisors (see below), whose sum is σ = 443484018432. Its totient is φ = 32062032000.

The previous prime is 133137886807. The next prime is 133137886867. The reversal of 133137886860 is 68688731331.

133137886860 is a `hidden beast` number, since 133 + 1 + 378 + 86 + 8 + 60 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 133137886797 and 133137886806.

It is not an unprimeable number, because it can be changed into a prime (133137886867) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76327 + ... + 521633.

It is an arithmetic number, because the mean of its divisors is an integer number (3079750128).

Almost surely, 2^133137886860 is an apocalyptic number.

133137886860 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 133137886860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221742009216).

133137886860 is an abundant number, since it is smaller than the sum of its proper divisors (310346131572).

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

133137886860 is a wasteful number, since it uses less digits than its factorization.

133137886860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445484 (or 445479 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 133137886860 in words is "one hundred thirty-three billion, one hundred thirty-seven million, eight hundred eighty-six thousand, eight hundred sixty".