133169725944 has 32 divisors (see below), whose sum is σ = 369915906000. Its totient is φ = 44389908576.

The previous prime is 133169725943. The next prime is 133169725961. The reversal of 133169725944 is 449527961331.

133169725944 is a `hidden beast` number, since 1 + 33 + 16 + 9 + 7 + 2 + 594 + 4 = 666.

It is a super-2 number, since 2×133169725944² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133169725943) 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, 308263039 + ... + 308263470.

Almost surely, 2^133169725944 is an apocalyptic number.

It is an amenable number.

133169725944 is an abundant number, since it is smaller than the sum of its proper divisors (236746180056).

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

133169725944 is a wasteful number, since it uses less digits than its factorization.

133169725944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616526524 (or 616526514 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 133169725944 in words is "one hundred thirty-three billion, one hundred sixty-nine million, seven hundred twenty-five thousand, nine hundred forty-four".