86991151697 has 8 divisors (see below), whose sum is σ = 87167978856. Its totient is φ = 86814415872.

The previous prime is 86991151691. The next prime is 86991151699. The reversal of 86991151697 is 79615119968.

It can be written as a sum of positive squares in 4 ways, for example, as 2893471681 + 84097680016 = 53791^2 + 289996^2 .

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 86991151697 - 2¹⁴ = 86991135313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86991151691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077823 + ... + 2119275.

It is an arithmetic number, because the mean of its divisors is an integer number (10895997357).

Almost surely, 2^86991151697 is an apocalyptic number.

It is an amenable number.

86991151697 is a deficient number, since it is larger than the sum of its proper divisors (176827159).

86991151697 is a wasteful number, since it uses less digits than its factorization.

86991151697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45667.

The product of its digits is 7348320, while the sum is 62.

The spelling of 86991151697 in words is "eighty-six billion, nine hundred ninety-one million, one hundred fifty-one thousand, six hundred ninety-seven".