86720417551 has 8 divisors (see below), whose sum is σ = 91090151424. Its totient is φ = 82400623800.

The previous prime is 86720417543. The next prime is 86720417569. The reversal of 86720417551 is 15571402768.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86720417551 - 2³ = 86720417543 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 (86720417521) 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 7 ways as a sum of consecutive naturals, for example, 12481471 + ... + 12488416.

It is an arithmetic number, because the mean of its divisors is an integer number (11386268928).

Almost surely, 2^86720417551 is an apocalyptic number.

86720417551 is a deficient number, since it is larger than the sum of its proper divisors (4369733873).

86720417551 is a wasteful number, since it uses less digits than its factorization.

86720417551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24970061.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 86720417551 in words is "eighty-six billion, seven hundred twenty million, four hundred seventeen thousand, five hundred fifty-one".