86461538771 has 4 divisors (see below), whose sum is σ = 86464009200. Its totient is φ = 86459068344.

The previous prime is 86461538753. The next prime is 86461538783. The reversal of 86461538771 is 17783516468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86461538771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86461538741) 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, 1181951 + ... + 1252968.

It is an arithmetic number, because the mean of its divisors is an integer number (21616002300).

Almost surely, 2^86461538771 is an apocalyptic number.

86461538771 is a deficient number, since it is larger than the sum of its proper divisors (2470429).

86461538771 is a wasteful number, since it uses less digits than its factorization.

86461538771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470428.

The product of its digits is 6773760, while the sum is 56.

The spelling of 86461538771 in words is "eighty-six billion, four hundred sixty-one million, five hundred thirty-eight thousand, seven hundred seventy-one".