133204321551 has 8 divisors (see below), whose sum is σ = 202978013824. Its totient is φ = 76116755160.

The previous prime is 133204321541. The next prime is 133204321561. The reversal of 133204321551 is 155123402331.

It is an interprime number because it is at equal distance from previous prime (133204321541) and next prime (133204321561).

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

It is not a de Polignac number, because 133204321551 - 2⁶ = 133204321487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133204321501) 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, 3171531445 + ... + 3171531486.

It is an arithmetic number, because the mean of its divisors is an integer number (25372251728).

Almost surely, 2^133204321551 is an apocalyptic number.

133204321551 is a deficient number, since it is larger than the sum of its proper divisors (69773692273).

133204321551 is an equidigital number, since it uses as much as digits as its factorization.

133204321551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343062941.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 133204321551 its reverse (155123402331), we get a palindrome (288327723882).

The spelling of 133204321551 in words is "one hundred thirty-three billion, two hundred four million, three hundred twenty-one thousand, five hundred fifty-one".