133491107880 has 192 divisors, whose sum is σ = 478615147920. Its totient is φ = 32057856000.

The previous prime is 133491107863. The next prime is 133491107881. The reversal of 133491107880 is 88701194331.

133491107880 is a `hidden beast` number, since 1 + 3 + 3 + 491 + 10 + 78 + 80 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 19191669156 + 114299438724 = 138534^2 + 338082^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (133491107881) 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, 155971 + ... + 539730.

Almost surely, 2^133491107880 is an apocalyptic number.

133491107880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133491107880 is an abundant number, since it is smaller than the sum of its proper divisors (345124040040).

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

133491107880 is a wasteful number, since it uses less digits than its factorization.

133491107880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695772 (or 695765 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 133491107880 in words is "one hundred thirty-three billion, four hundred ninety-one million, one hundred seven thousand, eight hundred eighty".