133686759424 has 117 divisors (see below), whose sum is σ = 278290019527. Its totient is φ = 64210829312.

The previous prime is 133686759403. The next prime is 133686759431. The reversal of 133686759424 is 424957686331.

The square root of 133686759424 is 365632.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 51184537600 + 82502221824 = 226240^2 + 287232^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 678612894 + ... + 678613090.

Almost surely, 2^133686759424 is an apocalyptic number.

133686759424 is the 365632-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133686759424

133686759424 is an abundant number, since it is smaller than the sum of its proper divisors (144603260103).

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

133686759424 is an frugal number, since it uses more digits than its factorization.

133686759424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 228 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 58.

The spelling of 133686759424 in words is "one hundred thirty-three billion, six hundred eighty-six million, seven hundred fifty-nine thousand, four hundred twenty-four".