86731428005 has 8 divisors (see below), whose sum is σ = 104082975000. Its totient is φ = 69381634816.

The previous prime is 86731427987. The next prime is 86731428011. The reversal of 86731428005 is 50082413768.

It is a Cunningham number, because it is equal to 294502²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 25599360004 + 61132068001 = 159998^2 + 247249^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 86731428005 - 2²² = 86727233701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327080 + ... + 529569.

It is an arithmetic number, because the mean of its divisors is an integer number (13010371875).

Almost surely, 2^86731428005 is an apocalyptic number.

It is an amenable number.

86731428005 is a deficient number, since it is larger than the sum of its proper divisors (17351546995).

86731428005 is a wasteful number, since it uses less digits than its factorization.

86731428005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876903.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 86731428005 in words is "eighty-six billion, seven hundred thirty-one million, four hundred twenty-eight thousand, five".