133421434433 has 6 divisors (see below), whose sum is σ = 155204525826. Its totient is φ = 114361229472.

The previous prime is 133421434429. The next prime is 133421434469. The reversal of 133421434433 is 334434124331.

It can be written as a sum of positive squares in only one way, i.e., 131966545984 + 1454888449 = 363272^2 + 38143^2 .

It is not a de Polignac number, because 133421434433 - 2² = 133421434429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133421434393 and 133421434402.

It is not an unprimeable number, because it can be changed into a prime (133421434423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1361443160 + ... + 1361443257.

It is an arithmetic number, because the mean of its divisors is an integer number (25867420971).

Almost surely, 2^133421434433 is an apocalyptic number.

It is an amenable number.

133421434433 is a deficient number, since it is larger than the sum of its proper divisors (21783091393).

133421434433 is an equidigital number, since it uses as much as digits as its factorization.

133421434433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722886431 (or 2722886424 counting only the distinct ones).

The product of its digits is 124416, while the sum is 35.

Adding to 133421434433 its reverse (334434124331), we get a palindrome (467855558764).

The spelling of 133421434433 in words is "one hundred thirty-three billion, four hundred twenty-one million, four hundred thirty-four thousand, four hundred thirty-three".