133240420880 has 80 divisors (see below), whose sum is σ = 354532308480. Its totient is φ = 45618756096.

The previous prime is 133240420849. The next prime is 133240420949. The reversal of 133240420880 is 88024042331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 133240420880.

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, 237182 + ... + 568098.

It is an arithmetic number, because the mean of its divisors is an integer number (4431653856).

Almost surely, 2^133240420880 is an apocalyptic number.

133240420880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133240420880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177266154240).

133240420880 is an abundant number, since it is smaller than the sum of its proper divisors (221291887600).

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

133240420880 is a wasteful number, since it uses less digits than its factorization.

133240420880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331656 (or 331650 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 133240420880 in words is "one hundred thirty-three billion, two hundred forty million, four hundred twenty thousand, eight hundred eighty".