133521461253 has 12 divisors (see below), whose sum is σ = 192974753088. Its totient is φ = 88963344360.

The previous prime is 133521461243. The next prime is 133521461257. The reversal of 133521461253 is 352164125331.

133521461253 is a `hidden beast` number, since 1 + 3 + 3 + 521 + 4 + 6 + 125 + 3 = 666.

It is not a de Polignac number, because 133521461253 - 2⁴ = 133521461237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133521461257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4230333 + ... + 4261778.

It is an arithmetic number, because the mean of its divisors is an integer number (16081229424).

Almost surely, 2^133521461253 is an apocalyptic number.

It is an amenable number.

133521461253 is a deficient number, since it is larger than the sum of its proper divisors (59453291835).

133521461253 is a wasteful number, since it uses less digits than its factorization.

133521461253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8493864 (or 8493861 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

Adding to 133521461253 its reverse (352164125331), we get a palindrome (485685586584).

The spelling of 133521461253 in words is "one hundred thirty-three billion, five hundred twenty-one million, four hundred sixty-one thousand, two hundred fifty-three".