86742580821 has 12 divisors (see below), whose sum is σ = 125237809728. Its totient is φ = 53380049424.

The previous prime is 86742580807. The next prime is 86742580831. The reversal of 86742580821 is 12808524768.

It is not a de Polignac number, because 86742580821 - 2¹⁷ = 86742449749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86742580831) by changing a digit.

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, 85544445 + ... + 85545458.

It is an arithmetic number, because the mean of its divisors is an integer number (10436484144).

Almost surely, 2^86742580821 is an apocalyptic number.

It is an amenable number.

86742580821 is a deficient number, since it is larger than the sum of its proper divisors (38495228907).

86742580821 is a wasteful number, since it uses less digits than its factorization.

86742580821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171089932 (or 171089919 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 86742580821 in words is "eighty-six billion, seven hundred forty-two million, five hundred eighty thousand, eight hundred twenty-one".