86699642851 has 4 divisors (see below), whose sum is σ = 86713639632. Its totient is φ = 86685646072.

The previous prime is 86699642849. The next prime is 86699642873. The reversal of 86699642851 is 15824699668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86699642851 - 2¹ = 86699642849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86699642251) 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, 6989095 + ... + 7001488.

It is an arithmetic number, because the mean of its divisors is an integer number (21678409908).

Almost surely, 2^86699642851 is an apocalyptic number.

86699642851 is a deficient number, since it is larger than the sum of its proper divisors (13996781).

86699642851 is a wasteful number, since it uses less digits than its factorization.

86699642851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13996780.

The product of its digits is 44789760, while the sum is 64.

The spelling of 86699642851 in words is "eighty-six billion, six hundred ninety-nine million, six hundred forty-two thousand, eight hundred fifty-one".