86621019169 has 4 divisors (see below), whose sum is σ = 86672004400. Its totient is φ = 86570033940.

The previous prime is 86621019157. The next prime is 86621019193. The reversal of 86621019169 is 96191012668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86621019169 - 2⁹ = 86621018657 is a prime.

It is a super-2 number, since 2×86621019169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86621019869) 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, 25490067 + ... + 25493464.

It is an arithmetic number, because the mean of its divisors is an integer number (21668001100).

Almost surely, 2^86621019169 is an apocalyptic number.

It is an amenable number.

86621019169 is a deficient number, since it is larger than the sum of its proper divisors (50985231).

86621019169 is a wasteful number, since it uses less digits than its factorization.

86621019169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50985230.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 86621019169 in words is "eighty-six billion, six hundred twenty-one million, nineteen thousand, one hundred sixty-nine".