133570513729 has 3 divisors (see below), whose sum is σ = 133570879203. Its totient is φ = 133570148256.

The previous prime is 133570513669. The next prime is 133570513757. The reversal of 133570513729 is 927315075331.

It is a happy number.

The square root of 133570513729 is 365473.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 927315075331 = 14293 ⋅64878967.

It can be written as a sum of positive squares in only one way, i.e., 78274050625 + 55296463104 = 279775^2 + 235152^2 .

It is not a de Polignac number, because 133570513729 - 2⁹ = 133570513217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133570573729) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 182737 + ... + 548209.

It is an arithmetic number, because the mean of its divisors is an integer number (44523626401).

Almost surely, 2^133570513729 is an apocalyptic number.

133570513729 is the 365473-rd square number.

133570513729 is the 182737-th centered octagonal number.

It is an amenable number.

133570513729 is a deficient number, since it is larger than the sum of its proper divisors (365474).

133570513729 is an frugal number, since it uses more digits than its factorization.

133570513729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730946 (or 365473 counting only the distinct ones).

The product of its (nonzero) digits is 595350, while the sum is 46.

The spelling of 133570513729 in words is "one hundred thirty-three billion, five hundred seventy million, five hundred thirteen thousand, seven hundred twenty-nine".