86641099893 has 24 divisors (see below), whose sum is σ = 125645844480. Its totient is φ = 57531492000.

The previous prime is 86641099873. The next prime is 86641099901. The reversal of 86641099893 is 39899014668.

It is a happy number.

It is not a de Polignac number, because 86641099893 - 2¹⁴ = 86641083509 is a prime.

It is a super-2 number, since 2×86641099893² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86641099893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86641099873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2571963 + ... + 2605431.

It is an arithmetic number, because the mean of its divisors is an integer number (5235243520).

Almost surely, 2^86641099893 is an apocalyptic number.

It is an amenable number.

86641099893 is a deficient number, since it is larger than the sum of its proper divisors (39004744587).

86641099893 is a wasteful number, since it uses less digits than its factorization.

86641099893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34609 (or 34606 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 86641099893 in words is "eighty-six billion, six hundred forty-one million, ninety-nine thousand, eight hundred ninety-three".