86981908485 has 16 divisors (see below), whose sum is σ = 139299111936. Its totient is φ = 46347665088.

The previous prime is 86981908471. The next prime is 86981908487. The reversal of 86981908485 is 58480918968.

It is a happy number.

It is not a de Polignac number, because 86981908485 - 2¹³ = 86981900293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86981908487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2651034 + ... + 2683643.

It is an arithmetic number, because the mean of its divisors is an integer number (8706194496).

Almost surely, 2^86981908485 is an apocalyptic number.

It is an amenable number.

86981908485 is a deficient number, since it is larger than the sum of its proper divisors (52317203451).

86981908485 is a wasteful number, since it uses less digits than its factorization.

86981908485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335772.

The product of its (nonzero) digits is 39813120, while the sum is 66.

The spelling of 86981908485 in words is "eighty-six billion, nine hundred eighty-one million, nine hundred eight thousand, four hundred eighty-five".