133747108409 has 2 divisors, whose sum is σ = 133747108410. Its totient is φ = 133747108408.

The previous prime is 133747108399. The next prime is 133747108447. The reversal of 133747108409 is 904801747331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92078868025 + 41668240384 = 303445^2 + 204128^2 .

It is a cyclic number.

It is not a de Polignac number, because 133747108409 - 2¹² = 133747104313 is a prime.

It is a super-2 number, since 2×133747108409² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133747188409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66873554204 + 66873554205.

It is an arithmetic number, because the mean of its divisors is an integer number (66873554205).

Almost surely, 2^133747108409 is an apocalyptic number.

It is an amenable number.

133747108409 is a deficient number, since it is larger than the sum of its proper divisors (1).

133747108409 is an equidigital number, since it uses as much as digits as its factorization.

133747108409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 133747108409 in words is "one hundred thirty-three billion, seven hundred forty-seven million, one hundred eight thousand, four hundred nine".