133445500204521 has 8 divisors (see below), whose sum is σ = 178204047968800. Its totient is φ = 88825309621632.

The previous prime is 133445500204493. The next prime is 133445500204561. The reversal of 133445500204521 is 125402005544331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133445500204521 - 2¹³ = 133445500196329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133445500204521.

It is not an unprimeable number, because it can be changed into a prime (133445500204561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34589293096 + ... + 34589296953.

It is an arithmetic number, because the mean of its divisors is an integer number (22275505996100).

Almost surely, 2^{133445500204521} is an apocalyptic number.

It is an amenable number.

133445500204521 is a deficient number, since it is larger than the sum of its proper divisors (44758547764279).

133445500204521 is an equidigital number, since it uses as much as digits as its factorization.

133445500204521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69178590695.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 133445500204521 its reverse (125402005544331), we get a palindrome (258847505748852).

The spelling of 133445500204521 in words is "one hundred thirty-three trillion, four hundred forty-five billion, five hundred million, two hundred four thousand, five hundred twenty-one".