134765911561 has 2 divisors, whose sum is σ = 134765911562. Its totient is φ = 134765911560.

The previous prime is 134765911549. The next prime is 134765911583. The reversal of 134765911561 is 165119567431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106622493961 + 28143417600 = 326531^2 + 167760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134765911561 is a prime.

It is not a weakly prime, because it can be changed into another prime (134765911531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67382955780 + 67382955781.

It is an arithmetic number, because the mean of its divisors is an integer number (67382955781).

Almost surely, 2^134765911561 is an apocalyptic number.

It is an amenable number.

134765911561 is a deficient number, since it is larger than the sum of its proper divisors (1).

134765911561 is an equidigital number, since it uses as much as digits as its factorization.

134765911561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The spelling of 134765911561 in words is "one hundred thirty-four billion, seven hundred sixty-five million, nine hundred eleven thousand, five hundred sixty-one".