86543649029 has 4 divisors (see below), whose sum is σ = 86544487680. Its totient is φ = 86542810380.

The previous prime is 86543649019. The next prime is 86543649037. The reversal of 86543649029 is 92094634568.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 86543649029 - 2³⁶ = 17824172293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86543649019) 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, 238559 + ... + 479580.

It is an arithmetic number, because the mean of its divisors is an integer number (21636121920).

Almost surely, 2^86543649029 is an apocalyptic number.

It is an amenable number.

86543649029 is a deficient number, since it is larger than the sum of its proper divisors (838651).

86543649029 is a wasteful number, since it uses less digits than its factorization.

86543649029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838650.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 86543649029 in words is "eighty-six billion, five hundred forty-three million, six hundred forty-nine thousand, twenty-nine".