133213403444 has 96 divisors (see below), whose sum is σ = 266052124800. Its totient is φ = 57806784000.

The previous prime is 133213403431. The next prime is 133213403447. The reversal of 133213403444 is 444304312331.

It is a super-2 number, since 2×133213403444² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133213403444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133213403447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112796534 + ... + 112797714.

It is an arithmetic number, because the mean of its divisors is an integer number (2771376300).

Almost surely, 2^133213403444 is an apocalyptic number.

It is an amenable number.

133213403444 is a deficient number, since it is larger than the sum of its proper divisors (132838721356).

133213403444 is a wasteful number, since it uses less digits than its factorization.

133213403444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 133213403444 its reverse (444304312331), we get a palindrome (577517715775).

The spelling of 133213403444 in words is "one hundred thirty-three billion, two hundred thirteen million, four hundred three thousand, four hundred forty-four".