133138491876 has 72 divisors (see below), whose sum is σ = 364272572664. Its totient is φ = 40757713920.

The previous prime is 133138491859. The next prime is 133138491883. The reversal of 133138491876 is 678194831331.

133138491876 is a `hidden beast` number, since 13 + 3 + 138 + 491 + 8 + 7 + 6 = 666.

133138491876 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 65576966400 + 67561525476 = 256080^2 + 259926^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 629845 + ... + 814236.

It is an arithmetic number, because the mean of its divisors is an integer number (5059341287).

Almost surely, 2^133138491876 is an apocalyptic number.

It is an amenable number.

133138491876 is an abundant number, since it is smaller than the sum of its proper divisors (231134080788).

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

133138491876 is a wasteful number, since it uses less digits than its factorization.

133138491876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444301 (or 1444296 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 133138491876 in words is "one hundred thirty-three billion, one hundred thirty-eight million, four hundred ninety-one thousand, eight hundred seventy-six".