133444242440 has 64 divisors (see below), whose sum is σ = 319815216000. Its totient is φ = 49936964608.

The previous prime is 133444242427. The next prime is 133444242493. The reversal of 133444242440 is 44242444331.

It is a super-3 number, since 3×133444242440³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133444242440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473990 + ... + 701109.

It is an arithmetic number, because the mean of its divisors is an integer number (4997112750).

Almost surely, 2^133444242440 is an apocalyptic number.

133444242440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133444242440 is an abundant number, since it is smaller than the sum of its proper divisors (186370973560).

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

133444242440 is a wasteful number, since it uses less digits than its factorization.

133444242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175294 (or 1175290 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 133444242440 its reverse (44242444331), we get a palindrome (177686686771).

The spelling of 133444242440 in words is "one hundred thirty-three billion, four hundred forty-four million, two hundred forty-two thousand, four hundred forty".