86173661745 has 48 divisors (see below), whose sum is σ = 153833022720. Its totient is φ = 44592273792.

The previous prime is 86173661741. The next prime is 86173661767. The reversal of 86173661745 is 54716637168.

86173661745 is a `hidden beast` number, since 8 + 6 + 17 + 3 + 6 + 617 + 4 + 5 = 666.

It is not a de Polignac number, because 86173661745 - 2² = 86173661741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86173661691 and 86173661700.

It is not an unprimeable number, because it can be changed into a prime (86173661741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 525652 + ... + 669818.

It is an arithmetic number, because the mean of its divisors is an integer number (3204854640).

Almost surely, 2^86173661745 is an apocalyptic number.

It is an amenable number.

86173661745 is a deficient number, since it is larger than the sum of its proper divisors (67659360975).

86173661745 is a wasteful number, since it uses less digits than its factorization.

86173661745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144574 (or 144571 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 86173661745 in words is "eighty-six billion, one hundred seventy-three million, six hundred sixty-one thousand, seven hundred forty-five".