86387361851 has 4 divisors (see below), whose sum is σ = 98728413552. Its totient is φ = 74046310152.

The previous prime is 86387361839. The next prime is 86387361859. The reversal of 86387361851 is 15816378368.

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 86387361851 - 2⁶ = 86387361787 is a prime.

It is a super-2 number, since 2×86387361851² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86387361859) 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, 6170525840 + ... + 6170525853.

It is an arithmetic number, because the mean of its divisors is an integer number (24682103388).

Almost surely, 2^86387361851 is an apocalyptic number.

86387361851 is a deficient number, since it is larger than the sum of its proper divisors (12341051701).

86387361851 is a wasteful number, since it uses less digits than its factorization.

86387361851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12341051700.

The product of its digits is 5806080, while the sum is 56.

The spelling of 86387361851 in words is "eighty-six billion, three hundred eighty-seven million, three hundred sixty-one thousand, eight hundred fifty-one".