133481494687 has 2 divisors, whose sum is σ = 133481494688. Its totient is φ = 133481494686.

The previous prime is 133481494673. The next prime is 133481494691. The reversal of 133481494687 is 786494184331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133481494687 - 2²³ = 133473106079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133481491687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66740747343 + 66740747344.

It is an arithmetic number, because the mean of its divisors is an integer number (66740747344).

Almost surely, 2^133481494687 is an apocalyptic number.

133481494687 is a deficient number, since it is larger than the sum of its proper divisors (1).

133481494687 is an equidigital number, since it uses as much as digits as its factorization.

133481494687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 58.

The spelling of 133481494687 in words is "one hundred thirty-three billion, four hundred eighty-one million, four hundred ninety-four thousand, six hundred eighty-seven".