86661942345 has 48 divisors (see below), whose sum is σ = 163922616000. Its totient is φ = 42004383360.

The previous prime is 86661942313. The next prime is 86661942361. The reversal of 86661942345 is 54324916668.

It is not a de Polignac number, because 86661942345 - 2⁵ = 86661942313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86661942291 and 86661942300.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1606471 + ... + 1659539.

It is an arithmetic number, because the mean of its divisors is an integer number (3415054500).

Almost surely, 2^86661942345 is an apocalyptic number.

It is an amenable number.

86661942345 is a deficient number, since it is larger than the sum of its proper divisors (77260673655).

86661942345 is a wasteful number, since it uses less digits than its factorization.

86661942345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56390 (or 56387 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 86661942345 in words is "eighty-six billion, six hundred sixty-one million, nine hundred forty-two thousand, three hundred forty-five".