133731055553 has 4 divisors (see below), whose sum is σ = 133958877360. Its totient is φ = 133503233748.

The previous prime is 133731055547. The next prime is 133731055559. The reversal of 133731055553 is 355550137331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (133731055547) and next prime (133731055559).

It is a cyclic number.

It is not a de Polignac number, because 133731055553 - 2¹⁰ = 133731054529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133731055553.

It is not an unprimeable number, because it can be changed into a prime (133731055559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113910023 + ... + 113911196.

It is an arithmetic number, because the mean of its divisors is an integer number (33489719340).

Almost surely, 2^133731055553 is an apocalyptic number.

It is an amenable number.

133731055553 is a deficient number, since it is larger than the sum of its proper divisors (227821807).

133731055553 is an equidigital number, since it uses as much as digits as its factorization.

133731055553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227821806.

The product of its (nonzero) digits is 354375, while the sum is 41.

The spelling of 133731055553 in words is "one hundred thirty-three billion, seven hundred thirty-one million, fifty-five thousand, five hundred fifty-three".