133738779356 has 108 divisors (see below), whose sum is σ = 310325170680. Its totient is φ = 50122800000.

The previous prime is 133738779281. The next prime is 133738779359. The reversal of 133738779356 is 653977837331.

133738779356 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133738779356² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133738779359) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 523106 + ... + 735606.

It is an arithmetic number, because the mean of its divisors is an integer number (2873381210).

Almost surely, 2^133738779356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133738779356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155162585340).

133738779356 is an abundant number, since it is smaller than the sum of its proper divisors (176586391324).

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

133738779356 is a wasteful number, since it uses less digits than its factorization.

133738779356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212564 (or 212542 counting only the distinct ones).

The product of its digits is 60011280, while the sum is 62.

The spelling of 133738779356 in words is "one hundred thirty-three billion, seven hundred thirty-eight million, seven hundred seventy-nine thousand, three hundred fifty-six".