85461737161 has 4 divisors (see below), whose sum is σ = 88218567424. Its totient is φ = 82704906900.

The previous prime is 85461737159. The next prime is 85461737177. The reversal of 85461737161 is 16173716458.

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: 16173716458 = 2 ⋅8086858229.

It is a cyclic number.

It is not a de Polignac number, because 85461737161 - 2¹ = 85461737159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85461737131) 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, 1378415085 + ... + 1378415146.

It is an arithmetic number, because the mean of its divisors is an integer number (22054641856).

Almost surely, 2^85461737161 is an apocalyptic number.

It is an amenable number.

85461737161 is a deficient number, since it is larger than the sum of its proper divisors (2756830263).

85461737161 is a wasteful number, since it uses less digits than its factorization.

85461737161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756830262.

The product of its digits is 846720, while the sum is 49.

The spelling of 85461737161 in words is "eighty-five billion, four hundred sixty-one million, seven hundred thirty-seven thousand, one hundred sixty-one".