133381444451 has 8 divisors (see below), whose sum is σ = 142417397760. Its totient is φ = 124615221192.

The previous prime is 133381444447. The next prime is 133381444453. The reversal of 133381444451 is 154444183331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133381444451 - 2² = 133381444447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133381444399 and 133381444408.

It is not an unprimeable number, because it can be changed into a prime (133381444453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67431491 + ... + 67433468.

It is an arithmetic number, because the mean of its divisors is an integer number (17802174720).

Almost surely, 2^133381444451 is an apocalyptic number.

133381444451 is a deficient number, since it is larger than the sum of its proper divisors (9035953309).

133381444451 is a wasteful number, since it uses less digits than its factorization.

133381444451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134865025.

The product of its digits is 276480, while the sum is 41.

The spelling of 133381444451 in words is "one hundred thirty-three billion, three hundred eighty-one million, four hundred forty-four thousand, four hundred fifty-one".