86681495898 has 16 divisors (see below), whose sum is σ = 192625546560. Its totient is φ = 28893831948.

The previous prime is 86681495881. The next prime is 86681495899. The reversal of 86681495898 is 89859418668.

It is a super-2 number, since 2×86681495898² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86681495899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802606390 + ... + 802606497.

It is an arithmetic number, because the mean of its divisors is an integer number (12039096660).

Almost surely, 2^86681495898 is an apocalyptic number.

86681495898 is an abundant number, since it is smaller than the sum of its proper divisors (105944050662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86681495898 is a wasteful number, since it uses less digits than its factorization.

86681495898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605212898 (or 1605212892 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 72.

The spelling of 86681495898 in words is "eighty-six billion, six hundred eighty-one million, four hundred ninety-five thousand, eight hundred ninety-eight".