134240163561 has 12 divisors (see below), whose sum is σ = 221602809792. Its totient is φ = 76708664856.

The previous prime is 134240163523. The next prime is 134240163581. The reversal of 134240163561 is 165361042431.

134240163561 is a `hidden beast` number, since 1 + 3 + 42 + 40 + 16 + 3 + 561 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-134240163561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134240163581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1065398061 + ... + 1065398186.

It is an arithmetic number, because the mean of its divisors is an integer number (18466900816).

Almost surely, 2^134240163561 is an apocalyptic number.

It is an amenable number.

134240163561 is a deficient number, since it is larger than the sum of its proper divisors (87362646231).

134240163561 is a wasteful number, since it uses less digits than its factorization.

134240163561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130796260 (or 2130796257 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 134240163561 in words is "one hundred thirty-four billion, two hundred forty million, one hundred sixty-three thousand, five hundred sixty-one".