161105704747 has 32 divisors (see below), whose sum is σ = 178322586624. Its totient is φ = 144641808000.

The previous prime is 161105704717. The next prime is 161105704751. The reversal of 161105704747 is 747407501161.

It is a cyclic number.

It is not a de Polignac number, because 161105704747 - 2¹¹ = 161105702699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161105704717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27178698 + ... + 27184624.

It is an arithmetic number, because the mean of its divisors is an integer number (5572580832).

Almost surely, 2^161105704747 is an apocalyptic number.

161105704747 is a deficient number, since it is larger than the sum of its proper divisors (17216881877).

161105704747 is a wasteful number, since it uses less digits than its factorization.

161105704747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379.

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 161105704747 in words is "one hundred sixty-one billion, one hundred five million, seven hundred four thousand, seven hundred forty-seven".