133604234540 has 96 divisors (see below), whose sum is σ = 339606618624. Its totient is φ = 43100605440.

The previous prime is 133604234539. The next prime is 133604234563. The reversal of 133604234540 is 45432406331.

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 133604234540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13234895 + ... + 13244985.

It is an arithmetic number, because the mean of its divisors is an integer number (3537568944).

Almost surely, 2^133604234540 is an apocalyptic number.

133604234540 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 133604234540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169803309312).

133604234540 is an abundant number, since it is smaller than the sum of its proper divisors (206002384084).

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

133604234540 is a wasteful number, since it uses less digits than its factorization.

133604234540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15687 (or 15685 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 133604234540 in words is "one hundred thirty-three billion, six hundred four million, two hundred thirty-four thousand, five hundred forty".