86635507212 has 36 divisors (see below), whose sum is σ = 219004334640. Its totient is φ = 28877312352.

The previous prime is 86635507171. The next prime is 86635507229. The reversal of 86635507212 is 21270553668.

86635507212 is a `hidden beast` number, since 8 + 6 + 635 + 5 + 0 + 7 + 2 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×86635507212² (a number of 23 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 1496518 + ... + 1553330.

It is an arithmetic number, because the mean of its divisors is an integer number (6083453740).

Almost surely, 2^86635507212 is an apocalyptic number.

It is an amenable number.

86635507212 is an abundant number, since it is smaller than the sum of its proper divisors (132368827428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86635507212 is a wasteful number, since it uses less digits than its factorization.

86635507212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99182 (or 99177 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 86635507212 in words is "eighty-six billion, six hundred thirty-five million, five hundred seven thousand, two hundred twelve".