133440443451 has 48 divisors (see below), whose sum is σ = 221106674880. Its totient is φ = 75966923520.

The previous prime is 133440443449. The next prime is 133440443459. The reversal of 133440443451 is 154344044331.

133440443451 is a `hidden beast` number, since 133 + 4 + 40 + 4 + 434 + 51 = 666.

It is not a de Polignac number, because 133440443451 - 2¹ = 133440443449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133440443459) 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, 25018981 + ... + 25024313.

It is an arithmetic number, because the mean of its divisors is an integer number (4606389060).

Almost surely, 2^133440443451 is an apocalyptic number.

133440443451 is a deficient number, since it is larger than the sum of its proper divisors (87666231429).

133440443451 is a wasteful number, since it uses less digits than its factorization.

133440443451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756 (or 6753 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 133440443451 its reverse (154344044331), we get a palindrome (287784487782).

The spelling of 133440443451 in words is "one hundred thirty-three billion, four hundred forty million, four hundred forty-three thousand, four hundred fifty-one".