133411623551 has 4 divisors (see below), whose sum is σ = 135239180112. Its totient is φ = 131584066992.

The previous prime is 133411623539. The next prime is 133411623557. The reversal of 133411623551 is 155326114331.

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 133411623551 - 2²⁶ = 133344514687 is a prime.

It is a super-2 number, since 2×133411623551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133411623557) 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, 913778171 + ... + 913778316.

It is an arithmetic number, because the mean of its divisors is an integer number (33809795028).

Almost surely, 2^133411623551 is an apocalyptic number.

133411623551 is a deficient number, since it is larger than the sum of its proper divisors (1827556561).

133411623551 is an equidigital number, since it uses as much as digits as its factorization.

133411623551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827556560.

The product of its digits is 32400, while the sum is 35.

Adding to 133411623551 its reverse (155326114331), we get a palindrome (288737737882).

The spelling of 133411623551 in words is "one hundred thirty-three billion, four hundred eleven million, six hundred twenty-three thousand, five hundred fifty-one".