133111366806 has 64 divisors (see below), whose sum is σ = 294999471360. Its totient is φ = 39702389760.

The previous prime is 133111366789. The next prime is 133111366807. The reversal of 133111366806 is 608663111331.

It is a happy number.

It is a super-2 number, since 2×133111366806² (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 (133111366807) 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, 5723730 + ... + 5746938.

It is an arithmetic number, because the mean of its divisors is an integer number (4609366740).

Almost surely, 2^133111366806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133111366806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147499735680).

133111366806 is an abundant number, since it is smaller than the sum of its proper divisors (161888104554).

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

133111366806 is a wasteful number, since it uses less digits than its factorization.

133111366806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24589.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 133111366806 in words is "one hundred thirty-three billion, one hundred eleven million, three hundred sixty-six thousand, eight hundred six".