161134691117 has 4 divisors (see below), whose sum is σ = 161137243200. Its totient is φ = 161132139036.

The previous prime is 161134691089. The next prime is 161134691129. The reversal of 161134691117 is 711196431161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 711196431161 = 12253 ⋅58042637.

It is a cyclic number.

It is not a de Polignac number, because 161134691117 - 2²⁰ = 161133642541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161134691717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178867 + ... + 1308432.

It is an arithmetic number, because the mean of its divisors is an integer number (40284310800).

Almost surely, 2^161134691117 is an apocalyptic number.

It is an amenable number.

161134691117 is a deficient number, since it is larger than the sum of its proper divisors (2552083).

161134691117 is an equidigital number, since it uses as much as digits as its factorization.

161134691117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552082.

The product of its digits is 27216, while the sum is 41.

The spelling of 161134691117 in words is "one hundred sixty-one billion, one hundred thirty-four million, six hundred ninety-one thousand, one hundred seventeen".