165706131107077 has 8 divisors (see below), whose sum is σ = 181199708043552. Its totient is φ = 150284118037200.

The previous prime is 165706131107053. The next prime is 165706131107081. The reversal of 165706131107077 is 770701131607561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165706131107077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165706131107047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17890961803 + ... + 17890971064.

It is an arithmetic number, because the mean of its divisors is an integer number (22649963505444).

Almost surely, 2^{165706131107077} is an apocalyptic number.

It is an amenable number.

165706131107077 is a deficient number, since it is larger than the sum of its proper divisors (15493576936475).

165706131107077 is a wasteful number, since it uses less digits than its factorization.

165706131107077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35781933299.

The product of its (nonzero) digits is 1296540, while the sum is 52.

The spelling of 165706131107077 in words is "one hundred sixty-five trillion, seven hundred six billion, one hundred thirty-one million, one hundred seven thousand, seventy-seven".