85601511505161 has 8 divisors (see below), whose sum is σ = 126817054081760. Its totient is φ = 57067674336756.

The previous prime is 85601511505151. The next prime is 85601511505187. The reversal of 85601511505161 is 16150511510658.

85601511505161 is a `hidden beast` number, since 8 + 5 + 6 + 0 + 15 + 115 + 0 + 516 + 1 = 666.

It is not a de Polignac number, because 85601511505161 - 2⁵ = 85601511505129 is a prime.

It is a super-2 number, since 2×85601511505161² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85601511505151) 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, 1585213175995 + ... + 1585213176048.

It is an arithmetic number, because the mean of its divisors is an integer number (15852131760220).

Almost surely, 2^{85601511505161} is an apocalyptic number.

It is an amenable number.

85601511505161 is a deficient number, since it is larger than the sum of its proper divisors (41215542576599).

85601511505161 is a wasteful number, since it uses less digits than its factorization.

85601511505161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170426352052 (or 3170426352046 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 45.

The spelling of 85601511505161 in words is "eighty-five trillion, six hundred one billion, five hundred eleven million, five hundred five thousand, one hundred sixty-one".