133696226881 has 4 divisors (see below), whose sum is σ = 152795687872. Its totient is φ = 114596765892.

The previous prime is 133696226863. The next prime is 133696226887. The reversal of 133696226881 is 188622696331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 188622696331 = 23 ⋅8200986797.

It is not a de Polignac number, because 133696226881 - 2⁹ = 133696226369 is a prime.

It is a super-2 number, since 2×133696226881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133696226887) 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, 9549730485 + ... + 9549730498.

It is an arithmetic number, because the mean of its divisors is an integer number (38198921968).

Almost surely, 2^133696226881 is an apocalyptic number.

It is an amenable number.

133696226881 is a deficient number, since it is larger than the sum of its proper divisors (19099460991).

133696226881 is an equidigital number, since it uses as much as digits as its factorization.

133696226881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19099460990.

The product of its digits is 4478976, while the sum is 55.

The spelling of 133696226881 in words is "one hundred thirty-three billion, six hundred ninety-six million, two hundred twenty-six thousand, eight hundred eighty-one".