161135313745 has 32 divisors (see below), whose sum is σ = 224255179008. Its totient is φ = 108861262848.

The previous prime is 161135313743. The next prime is 161135313749. The reversal of 161135313745 is 547313531161.

It is not a de Polignac number, because 161135313745 - 2¹ = 161135313743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161135313698 and 161135313707.

It is not an unprimeable number, because it can be changed into a prime (161135313743) 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, 2360382 + ... + 2427688.

It is an arithmetic number, because the mean of its divisors is an integer number (7007974344).

Almost surely, 2^161135313745 is an apocalyptic number.

It is an amenable number.

161135313745 is a deficient number, since it is larger than the sum of its proper divisors (63119865263).

161135313745 is an equidigital number, since it uses as much as digits as its factorization.

161135313745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68329.

The product of its digits is 113400, while the sum is 40.

The spelling of 161135313745 in words is "one hundred sixty-one billion, one hundred thirty-five million, three hundred thirteen thousand, seven hundred forty-five".