133546252651 has 4 divisors (see below), whose sum is σ = 152624288752. Its totient is φ = 114468216552.

The previous prime is 133546252643. The next prime is 133546252667. The reversal of 133546252651 is 156252645331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133546252651 - 2³ = 133546252643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133546252598 and 133546252607.

It is not an unprimeable number, because it can be changed into a prime (133546252601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9539018040 + ... + 9539018053.

It is an arithmetic number, because the mean of its divisors is an integer number (38156072188).

Almost surely, 2^133546252651 is an apocalyptic number.

133546252651 is a deficient number, since it is larger than the sum of its proper divisors (19078036101).

133546252651 is an equidigital number, since it uses as much as digits as its factorization.

133546252651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19078036100.

The product of its digits is 648000, while the sum is 43.

Adding to 133546252651 its reverse (156252645331), we get a palindrome (289798897982).

The spelling of 133546252651 in words is "one hundred thirty-three billion, five hundred forty-six million, two hundred fifty-two thousand, six hundred fifty-one".