133681608001 has 2 divisors, whose sum is σ = 133681608002. Its totient is φ = 133681608000.

The previous prime is 133681607981. The next prime is 133681608007. The reversal of 133681608001 is 100806186331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126790117776 + 6891490225 = 356076^2 + 83015^2 .

It is a cyclic number.

It is not a de Polignac number, because 133681608001 - 2²¹ = 133679510849 is a prime.

It is not a weakly prime, because it can be changed into another prime (133681608007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66840804000 + 66840804001.

It is an arithmetic number, because the mean of its divisors is an integer number (66840804001).

Almost surely, 2^133681608001 is an apocalyptic number.

It is an amenable number.

133681608001 is a deficient number, since it is larger than the sum of its proper divisors (1).

133681608001 is an equidigital number, since it uses as much as digits as its factorization.

133681608001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 133681608001 in words is "one hundred thirty-three billion, six hundred eighty-one million, six hundred eight thousand, one".