134787198569 has 2 divisors, whose sum is σ = 134787198570. Its totient is φ = 134787198568.

The previous prime is 134787198547. The next prime is 134787198587. The reversal of 134787198569 is 965891787431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109111302400 + 25675896169 = 330320^2 + 160237^2 .

It is an emirp because it is prime and its reverse (965891787431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134787198569 - 2³² = 130492231273 is a prime.

It is a super-2 number, since 2×134787198569² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134787198499 and 134787198508.

It is not a weakly prime, because it can be changed into another prime (134787198589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67393599284 + 67393599285.

It is an arithmetic number, because the mean of its divisors is an integer number (67393599285).

Almost surely, 2^134787198569 is an apocalyptic number.

It is an amenable number.

134787198569 is a deficient number, since it is larger than the sum of its proper divisors (1).

134787198569 is an equidigital number, since it uses as much as digits as its factorization.

134787198569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 68.

The spelling of 134787198569 in words is "one hundred thirty-four billion, seven hundred eighty-seven million, one hundred ninety-eight thousand, five hundred sixty-nine".