133565406064457 has 2 divisors, whose sum is σ = 133565406064458. Its totient is φ = 133565406064456.

The previous prime is 133565406064217. The next prime is 133565406064487. The reversal of 133565406064457 is 754460604565331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78811977067321 + 54753428997136 = 8877611^2 + 7399556^2 .

It is a cyclic number.

It is not a de Polignac number, because 133565406064457 - 2²⁰ = 133565405015881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133565406064396 and 133565406064405.

It is not a weakly prime, because it can be changed into another prime (133565406064487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66782703032228 + 66782703032229.

It is an arithmetic number, because the mean of its divisors is an integer number (66782703032229).

Almost surely, 2^{133565406064457} is an apocalyptic number.

It is an amenable number.

133565406064457 is a deficient number, since it is larger than the sum of its proper divisors (1).

133565406064457 is an equidigital number, since it uses as much as digits as its factorization.

133565406064457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864000, while the sum is 59.

The spelling of 133565406064457 in words is "one hundred thirty-three trillion, five hundred sixty-five billion, four hundred six million, sixty-four thousand, four hundred fifty-seven".