86221216756 has 6 divisors (see below), whose sum is σ = 150887129330. Its totient is φ = 43110608376.

The previous prime is 86221216699. The next prime is 86221216799. The reversal of 86221216756 is 65761212268.

It can be written as a sum of positive squares in only one way, i.e., 85931059600 + 290157156 = 293140^2 + 17034^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10777652091 + ... + 10777652098.

Almost surely, 2^86221216756 is an apocalyptic number.

It is an amenable number.

86221216756 is a deficient number, since it is larger than the sum of its proper divisors (64665912574).

86221216756 is a wasteful number, since it uses less digits than its factorization.

86221216756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21555304193 (or 21555304191 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The spelling of 86221216756 in words is "eighty-six billion, two hundred twenty-one million, two hundred sixteen thousand, seven hundred fifty-six".