133975725786 has 120 divisors (see below), whose sum is σ = 354518635680. Its totient is φ = 37043678160.

The previous prime is 133975725781. The next prime is 133975725787. The reversal of 133975725786 is 687527579331.

133975725786 is a `hidden beast` number, since 1 + 3 + 3 + 9 + 7 + 57 + 2 + 578 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (133975725781) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1028305 + ... + 1151243.

It is an arithmetic number, because the mean of its divisors is an integer number (2954321964).

Almost surely, 2^133975725786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133975725786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177259317840).

133975725786 is an abundant number, since it is smaller than the sum of its proper divisors (220542909894).

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

133975725786 is a wasteful number, since it uses less digits than its factorization.

133975725786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123022 (or 122982 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 63.

The spelling of 133975725786 in words is "one hundred thirty-three billion, nine hundred seventy-five million, seven hundred twenty-five thousand, seven hundred eighty-six".