86212729505 has 8 divisors (see below), whose sum is σ = 118234600512. Its totient is φ = 59117300208.

The previous prime is 86212729487. The next prime is 86212729553. The reversal of 86212729505 is 50592721268.

It is a happy number.

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 86212729505 - 2¹⁸ = 86212467361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86212729505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231610387 + ... + 1231610456.

It is an arithmetic number, because the mean of its divisors is an integer number (14779325064).

Almost surely, 2^86212729505 is an apocalyptic number.

It is an amenable number.

86212729505 is a deficient number, since it is larger than the sum of its proper divisors (32021871007).

86212729505 is a wasteful number, since it uses less digits than its factorization.

86212729505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463220855.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 86212729505 in words is "eighty-six billion, two hundred twelve million, seven hundred twenty-nine thousand, five hundred five".