86442943658 has 8 divisors (see below), whose sum is σ = 130073452452. Its totient is φ = 43085126176.

The previous prime is 86442943651. The next prime is 86442943709. The reversal of 86442943658 is 85634924468.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85847242009 + 595701649 = 292997^2 + 24407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 86442943597 and 86442943606.

It is not an unprimeable number, because it can be changed into a prime (86442943651) 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, 68172035 + ... + 68173302.

Almost surely, 2^86442943658 is an apocalyptic number.

86442943658 is a deficient number, since it is larger than the sum of its proper divisors (43630508794).

86442943658 is a wasteful number, since it uses less digits than its factorization.

86442943658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136345656.

The product of its digits is 39813120, while the sum is 59.

The spelling of 86442943658 in words is "eighty-six billion, four hundred forty-two million, nine hundred forty-three thousand, six hundred fifty-eight".