86789551681 has 16 divisors (see below), whose sum is σ = 103009629184. Its totient is φ = 71576510544.

The previous prime is 86789551613. The next prime is 86789551697. The reversal of 86789551681 is 18615598768.

It is a happy number.

It is not a de Polignac number, because 86789551681 - 2¹⁷ = 86789420609 is a prime.

It is a super-2 number, since 2×86789551681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86789521681) 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 15 ways as a sum of consecutive naturals, for example, 2131605 + ... + 2171938.

It is an arithmetic number, because the mean of its divisors is an integer number (6438101824).

Almost surely, 2^86789551681 is an apocalyptic number.

It is an amenable number.

86789551681 is a deficient number, since it is larger than the sum of its proper divisors (16220077503).

86789551681 is a wasteful number, since it uses less digits than its factorization.

86789551681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303660.

The product of its digits is 29030400, while the sum is 64.

The spelling of 86789551681 in words is "eighty-six billion, seven hundred eighty-nine million, five hundred fifty-one thousand, six hundred eighty-one".